W. L. Yuan - BESIII Collaboration

W. L. Yuan
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W. L. Yuan
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BESIII Collaboration
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High Energy Physics - Experiment (24)
 
Physics - Materials Science (6)
 
Instrumentation and Methods for Astrophysics (5)
 
High Energy Astrophysical Phenomena (5)
 
Physics - Mesoscopic Systems and Quantum Hall Effect (5)
 
Solar and Stellar Astrophysics (4)
 
Astrophysics of Galaxies (3)
 
Cosmology and Nongalactic Astrophysics (3)
 
Mathematics - Functional Analysis (3)
 
Mathematics - Differential Geometry (3)
 
Mathematics - Classical Analysis and ODEs (3)
 
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Computer Science - Robotics (1)
 
Mathematics - Analysis of PDEs (1)
 
Computer Science - Computer Vision and Pattern Recognition (1)
 
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Publications Authored By W. L. Yuan

Let $p(\cdot):\ \mathbb R^n\to(0,\infty)$ be a variable exponent function satisfying the globally log-H\"{o}lder continuous condition, $q\in(0,\infty]$ and $A$ be a general expansive matrix on $\mathbb{R}^n$. In this article, the authors first introduce the anisotropic variable Hardy-Lorentz space $H_A^{p(\cdot),q}(\mathbb R^n)$ associated with $A$, via the radial grand maximal function, and then establish its radial or non-tangential maximal function characterizations. Moreover, the authors also obtain characterizations of $H_A^{p(\cdot),q}(\mathbb R^n)$, respectively, in terms of the atom and the Lusin area function. Read More

2017May
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, P. F. Duan, E. E. Eren, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, C. Geng, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, Y. L. Han, X. Q. Hao, F. A. Harris, K. L. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. M. Huang, G. S. Huang, H. P. Huang, J. S. Huang, X. T. Huang, Y. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. L. Jiang, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, J. S. Lange, M. Lara, P. Larin, C. Leng, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. B. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. M. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. J. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, X. X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, R. Q. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, Y. N. Pu, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, H. L. Ren, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, V. Santoro, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, Z. Wu, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, H. Ye, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. H. Zhang, X. Y. Zhang, Y. Zhang, Y. N. Zhang, Y. H. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

Using a data set of 2.93 fb$^{-1}$ taken at a center-of-mass energy $\sqrt{s}$ = 3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark photon. Read More

The emergence of two-dimensional (2D) materials has attracted a great deal of attention due to their fascinating physical properties and potential applications for future nanoelectronic devices. Since the first isolation of graphene, a Dirac material, a large family of new functional 2D materials have been discovered and characterized, including insulating 2D boron nitride, semiconducting 2D transition metal dichalcogenides and black phosphorus, and superconducting 2D bismuth strontium calcium copper oxide, molybdenum disulphide and niobium selenide, etc. Here, we report the identification of ferromagnetic thin flakes of Cr2Ge2Te6 (CGT) with thickness down to a few nanometers, which provides a very important piece to the van der Waals structures consisting of various 2D materials. Read More

We show a closed Bach-flat Riemannian manifold with a fixed positive constant scalar curvature has to be locally spherical if its Weyl and traceless Ricci tensors are small in the sense of either $L^\infty$ or $L^{\frac{n}{2}}$-norm. Compared with the complete non-compact case done by Kim, we apply a different method to achieve these results. These results generalize a rigidity theorem of positive Einstein manifolds due to M. Read More

For machines to interact with the physical world, they must understand the physical properties of objects and materials they encounter. We use fabrics as an example of a deformable material with a rich set of mechanical properties. A thin flexible fabric, when draped, tends to look different from a heavy stiff fabric. Read More

Hardness is among the most important attributes of an object that humans learn about through touch. However, approaches for robots to estimate hardness are limited, due to the lack of information provided by current tactile sensors. In this work, we address these limitations by introducing a novel method for hardness estimation, based on the GelSight tactile sensor, and the method does not require accurate control of contact conditions or the shape of objects. Read More

The rapid development of X-ray astronomy has been made possible by widely deploying X-ray focusing telescopes on board many X-ray satellites. Geant4 is a very powerful toolkit for Monte Carlo simulations and has remarkable abilities to model complex geometrical configurations. However, the library of physical processes available in Geant4 lacks a description of the reflection of X-ray photons at a grazing incident angle which is the core physical process in the simulation of X-ray focusing telescopes. Read More

Let $p(\cdot):\ \mathbb R^n\to(0,\infty)$ be a variable exponent function satisfying the globally log-H\"older continuous condition. In this article, the authors first obtain a decomposition for any distribution of the variable weak Hardy space into "good" and "bad" parts and then prove the following real interpolation theorem between the variable Hardy space $H^{p(\cdot)}(\mathbb R^n)$ and the space $L^{\infty}(\mathbb R^n)$: \begin{equation*} (H^{p(\cdot)}(\mathbb R^n),L^{\infty}(\mathbb R^n))_{\theta,\infty} =W\!H^{p(\cdot)/(1-\theta)}(\mathbb R^n),\quad \theta\in(0,1), \end{equation*} where $W\!H^{p(\cdot)/(1-\theta)}(\mathbb R^n)$ denotes the variable weak Hardy space. As an application, the variable weak Hardy space $W\!H^{p(\cdot)}(\mathbb R^n)$ with $p_-:=\mathop\mathrm{ess\,inf}_{x\in\rn}p(x)\in(1,\infty)$ is proved to coincide with the variable Lebesgue space $W\!L^{p(\cdot)}(\mathbb R^n)$. Read More

Energy consumption has become a first-class optimization goal in design and implementation of data-intensive computing systems. This is particularly true in the design of database management systems (DBMS), which was found to be the major consumer of energy in the software stack of modern data centers. Among all database components, the storage system is one of the most power-hungry elements. Read More

2017Mar
Affiliations: 1Texas A&M University, 2Texas A&M University, 3Texas A&M University, 4Texas A&M University, 5Texas A&M University

We present the discovery of 1847 Mira candidates in the Local Group galaxy M33 using a novel semi-parametric periodogram technique coupled with a Random Forest classifier. The algorithms were applied to ~2.4x10^5 I-band light curves previously obtained by the M33 Synoptic Stellar Survey. Read More

2017Jan
Authors: M. Ablikim1, M. N. Achasov2, X. C. Ai3, O. Albayrak4, M. Albrecht5, D. J. Ambrose6, A. Amoroso7, F. F. An8, Q. An9, J. Z. Bai10, R. Baldini Ferroli11, Y. Ban12, D. W. Bennett13, J. V. Bennett14, M. Bertani15, D. Bettoni16, J. M. Bian17, F. Bianchi18, E. Boger19, I. Boyko20, R. A. Briere21, H. Cai22, X. Cai23, O. Cakir24, A. Calcaterra25, G. F. Cao26, S. A. Cetin27, J. F. Chang28, G. Chelkov29, G. Chen30, H. S. Chen31, H. Y. Chen32, J. C. Chen33, M. L. Chen34, S. Chen35, S. J. Chen36, X. Chen37, X. R. Chen38, Y. B. Chen39, H. P. Cheng40, X. K. Chu41, G. Cibinetto42, H. L. Dai43, J. P. Dai44, A. Dbeyssi45, D. Dedovich46, Z. Y. Deng47, A. Denig48, I. Denysenko49, M. Destefanis50, F. De Mori51, Y. Ding52, C. Dong53, J. Dong54, L. Y. Dong55, M. Y. Dong56, Z. L. Dou57, S. X. Du58, P. F. Duan59, J. Z. Fan60, J. Fang61, S. S. Fang62, X. Fang63, Y. Fang64, R. Farinelli65, L. Fava66, O. Fedorov67, F. Feldbauer68, G. Felici69, C. Q. Feng70, E. Fioravanti71, M. Fritsch72, C. D. Fu73, Q. Gao74, X. L. Gao75, X. Y. Gao76, Y. Gao77, Z. Gao78, I. Garzia79, K. Goetzen80, L. Gong81, W. X. Gong82, W. Gradl83, M. Greco84, M. H. Gu85, Y. T. Gu86, Y. H. Guan87, A. Q. Guo88, L. B. Guo89, R. P. Guo90, Y. Guo91, Y. P. Guo92, Z. Haddadi93, A. Hafner94, S. Han95, X. Q. Hao96, F. A. Harris97, K. L. He98, T. Held99, Y. K. Heng100, Z. L. Hou101, C. Hu102, H. M. Hu103, J. F. Hu104, T. Hu105, Y. Hu106, G. S. Huang107, J. S. Huang108, X. T. Huang109, X. Z. Huang110, Y. Huang111, Z. L. Huang112, T. Hussain113, Q. Ji114, Q. P. Ji115, X. B. Ji116, X. L. Ji117, L. W. Jiang118, X. S. Jiang119, X. Y. Jiang120, J. B. Jiao121, Z. Jiao122, D. P. Jin123, S. Jin124, T. Johansson125, A. Julin126, N. Kalantar-Nayestanaki127, X. L. Kang128, X. S. Kang129, M. Kavatsyuk130, B. C. Ke131, P. Kiese132, R. Kliemt133, B. Kloss134, O. B. Kolcu135, B. Kopf136, M. Kornicer137, A. Kupsc138, W. Kühn139, J. S. Lange140, M. Lara141, P. Larin142, C. Leng143, C. Li144, Cheng Li145, D. M. Li146, F. Li147, F. Y. Li148, G. Li149, H. B. Li150, H. J. Li151, J. C. Li152, Jin Li153, K. Li154, K. Li155, Lei Li156, P. R. Li157, Q. Y. Li158, T. Li159, W. D. Li160, W. G. Li161, X. L. Li162, X. N. Li163, X. Q. Li164, Y. B. Li165, Z. B. Li166, H. Liang167, Y. F. Liang168, Y. T. Liang169, G. R. Liao170, D. X. Lin171, B. Liu172, B. J. Liu173, C. X. Liu174, D. Liu175, F. H. Liu176, Fang Liu177, Feng Liu178, H. B. Liu179, H. H. Liu180, H. H. Liu181, H. M. Liu182, J. Liu183, J. B. Liu184, J. P. Liu185, J. Y. Liu186, K. Liu187, K. Y. Liu188, L. D. Liu189, P. L. Liu190, Q. Liu191, S. B. Liu192, X. Liu193, Y. B. Liu194, Z. A. Liu195, Zhiqing Liu196, H. Loehner197, X. C. Lou198, H. J. Lu199, J. G. Lu200, Y. Lu201, Y. P. Lu202, C. L. Luo203, M. X. Luo204, T. Luo205, X. L. Luo206, X. R. Lyu207, F. C. Ma208, H. L. Ma209, L. L. Ma210, M. M. Ma211, Q. M. Ma212, T. Ma213, X. N. Ma214, X. Y. Ma215, Y. M. Ma216, F. E. Maas217, M. Maggiora218, Y. J. Mao219, Z. P. Mao220, S. Marcello221, J. G. Messchendorp222, J. Min223, R. E. Mitchell224, X. H. Mo225, Y. J. Mo226, C. Morales Morales227, N. Yu. Muchnoi228, H. Muramatsu229, Y. Nefedov230, F. Nerling231, I. B. Nikolaev232, Z. Ning233, S. Nisar234, S. L. Niu235, X. Y. Niu236, S. L. Olsen237, Q. Ouyang238, S. Pacetti239, Y. Pan240, P. Patteri241, M. Pelizaeus242, H. P. Peng243, K. Peters244, J. Pettersson245, J. L. Ping246, R. G. Ping247, R. Poling248, V. Prasad249, H. R. Qi250, M. Qi251, S. Qian252, C. F. Qiao253, L. Q. Qin254, N. Qin255, X. S. Qin256, Z. H. Qin257, J. F. Qiu258, K. H. Rashid259, C. F. Redmer260, M. Ripka261, G. Rong262, Ch. Rosner263, X. D. Ruan264, A. Sarantsev265, M. Savrié266, K. Schoenning267, S. Schumann268, W. Shan269, M. Shao270, C. P. Shen271, P. X. Shen272, X. Y. Shen273, H. Y. Sheng274, M. Shi275, W. M. Song276, X. Y. Song277, S. Sosio278, S. Spataro279, G. X. Sun280, J. F. Sun281, S. S. Sun282, X. H. Sun283, Y. J. Sun284, Y. Z. Sun285, Z. J. Sun286, Z. T. Sun287, C. J. Tang288, X. Tang289, I. Tapan290, E. H. Thorndike291, M. Tiemens292, M. Ullrich293, I. Uman294, G. S. Varner295, B. Wang296, B. L. Wang297, D. Wang298, D. Y. Wang299, K. Wang300, L. L. Wang301, L. S. Wang302, M. Wang303, P. Wang304, P. L. Wang305, S. G. Wang306, W. Wang307, W. P. Wang308, X. F. Wang309, Y. Wang310, Y. D. Wang311, Y. F. Wang312, Y. Q. Wang313, Z. Wang314, Z. G. Wang315, Z. H. Wang316, Z. Y. Wang317, Z. Y. Wang318, T. Weber319, D. H. Wei320, J. B. Wei321, P. Weidenkaff322, S. P. Wen323, U. Wiedner324, M. Wolke325, L. H. Wu326, L. J. Wu327, Z. Wu328, L. Xia329, L. G. Xia330, Y. Xia331, D. Xiao332, H. Xiao333, Z. J. Xiao334, Y. G. Xie335, Q. L. Xiu336, G. F. Xu337, J. J. Xu338, L. Xu339, Q. J. Xu340, Q. N. Xu341, X. P. Xu342, L. Yan343, W. B. Yan344, W. C. Yan345, Y. H. Yan346, H. J. Yang347, H. X. Yang348, L. Yang349, Y. X. Yang350, M. Ye351, M. H. Ye352, J. H. Yin353, B. X. Yu354, C. X. Yu355, J. S. Yu356, C. Z. Yuan357, W. L. Yuan358, Y. Yuan359, A. Yuncu360, A. A. Zafar361, A. Zallo362, Y. Zeng363, Z. Zeng364, B. X. Zhang365, B. Y. Zhang366, C. Zhang367, C. C. Zhang368, D. H. Zhang369, H. H. Zhang370, H. Y. Zhang371, J. Zhang372, J. J. Zhang373, J. L. Zhang374, J. Q. Zhang375, J. W. Zhang376, J. Y. Zhang377, J. Z. Zhang378, K. Zhang379, L. Zhang380, S. Q. Zhang381, X. Y. Zhang382, Y. Zhang383, Y. H. Zhang384, Y. N. Zhang385, Y. T. Zhang386, Yu Zhang387, Z. H. Zhang388, Z. P. Zhang389, Z. Y. Zhang390, G. Zhao391, J. W. Zhao392, J. Y. Zhao393, J. Z. Zhao394, Lei Zhao395, Ling Zhao396, M. G. Zhao397, Q. Zhao398, Q. W. Zhao399, S. J. Zhao400, T. C. Zhao401, Y. B. Zhao402, Z. G. Zhao403, A. Zhemchugov404, B. Zheng405, J. P. Zheng406, W. J. Zheng407, Y. H. Zheng408, B. Zhong409, L. Zhou410, X. Zhou411, X. K. Zhou412, X. R. Zhou413, X. Y. Zhou414, K. Zhu415, K. J. Zhu416, S. Zhu417, S. H. Zhu418, X. L. Zhu419, Y. C. Zhu420, Y. S. Zhu421, Z. A. Zhu422, J. Zhuang423, L. Zotti424, B. S. Zou425, J. H. Zou426
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We present an amplitude analysis of the decay $D^{0} \rightarrow K^{-} \pi^{+} \pi^{+} \pi^{-}$ based on a data sample of 2.93 ${\mbox{\,fb}^{-1}}$ acquired by the BESIII detector at the $\psi(3770)$ resonance. With a nearly background free sample of about 16000 events, we investigate the substructure of the decay and determine the relative fractions and the phases among the different intermediate processes. Read More

2017Jan
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, Z. L. Dou, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, R. Farinelli, L. Fava, O. Fedorov, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Y. Huang, Z. L. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, A. Kupsc, W. Kühn, J. S. Lange, M. Lara, P. Larin, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, Q. Y. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Y. B. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, Y. M. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, H. R. Qi, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Y. N. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

Using $4.479 \times 10^{8}$ $\psi(3686)$ events collected with the BESIII detector, we search for the decays $\psi(3686) \rightarrow e^{+}e^{-}\chi_{c0,1,2}$ and $\chi_{c0,1,2} \rightarrow e^{+}e^{-}J/\psi$. The decays $\psi(3686) \rightarrow e^{+}e^{-}\chi_{c0,1,2}$ and $\chi_{c0,1,2} \rightarrow e^{+}e^{-}J/\psi$ are observed for the first time. Read More

2017Jan
Authors: M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, N. Berger, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. Chai, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, Z. L. Dou, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, R. Farinelli, L. Fava, O. Fedorov, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, F. H. Heinsius, T. Held, Y. K. Heng, T. Holtmann, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Y. Huang, Z. L. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, A. Kupsc, W. Kühn, J. S. Lange, M. Lara, P. Larin, H. Leithoff, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, Q. Y. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Y. B. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Y. Y. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, Y. M. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, G. Mezzadri, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, N. Yu. Muchnoi, H. Muramatsu, P. Musiol, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, H. R. Qi, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, A. Sarantsev, M. Savrié, C. Schnier, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, I. Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Y. N. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

Based on $e^+e^-$ annihilation data samples collected with the BESIII detector at the BEPCII collider at 13 center of mass energies from 4.008 to 4.600 GeV, measurements of the Born cross section of $e^{+}e^{-}\rightarrow p \bar{p} \pi^{0}$ are performed. Read More

2017Jan
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. BettoniA, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. CibinettoA, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, Z. L. Dou, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, R. FarinelliA, L. Fava, O. Fedorov, F. Feldbauer, G. Felici, C. Q. Feng, E. FioravantiA, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. GarziaA, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Y. Huang, Z. L. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, A. Kupsc, W. Kühn, J. S. Lange, M. Lara, P. Larin, H. Leithoff, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, Q. Y. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. M. Li, X. N. Li, X. Q. Li, Y. B. Li, Z. B. Li, H. Liang, J. J. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, Y. M. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, G. MezzadriB, J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, H. R. Qi, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, A. Sarantsev, M. SavriéB, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Y. N. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

Using 106~million $\psi(3686)$ events collected with the BESIII detector, we measure multipole amplitudes for the decay $\psi(3686)\rightarrow\gamma\chi_{c1,2}\to\gamma\gamma J/\psi$ beyond the dominant electric-dipole amplitudes. The normalized magnetic-quadrupole amplitude for $\psi(3686)\rightarrow\gamma\chi_{c1,2}\rightarrow\gamma\gamma J/\psi$ and the normalized electric-octupole amplitudes for $\psi(3686)rightarrow\gamma\chi_{c2}$,~$\chi_{c2}\rightarrow\gamma J/\psi$ are determined. The M2 amplitudes for $\psi(3686)\rightarrow\gamma\chi_{c1}$ and $\chi_{c1,2}\rightarrow\gamma J/\psi$ are found to differ significantly from zero and are consistent with theoretical predictions. Read More

The evolution of massive stars surviving the red supergiant (RSG) stage remains unexplored due to the rarity of such objects. The yellow hypergiants (YHGs) appear to be the warm counterparts of post-RSG classes located near the Humphreys-Davidson upper luminosity limit, which are characterized by atmospheric instability and high mass-loss rates. We aim to increase the number of YHGs in M33 and thus to contribute to a better understanding of the pre-supernova evolution of massive stars. Read More

2016Dec
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, Z. L. Dou, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, R. Farinelli, L. Fava, O. Fedorov, F. Feldbau er, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Y. Huang, Z. L. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, A. Kupsc, W. Kuhn, J. S. Lange, M. Lara, P. Larin, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, Q. Y. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Y. B. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y . Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, Y. M. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. M ao, S. Marcello, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, H. R. Qi, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, A. Sarantsev, M. Savri'e, K. Schoenning, S. Schumann, W. S han, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T . Sun, C. J. Tang, X. Tang, I. TapanC, E. H. Thorndike, M. Tiemens, M. Ullrich, I. UmanD, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, P. Weidenkaff, S. P. Wen, U. Wiedn er, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. ZalloA, Y. Zeng, Z . Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zha ng, S. Q. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Y. N. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

Using $(223.7\pm1.4)\times10^6$ J/$\psi$ events accumulated with the BESIII detector, we study $\eta_c$ decays to $\phi\phi$ and $\omega\phi$ final states. Read More

2016Nov
Authors: M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, N. Berger, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. Chai, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. DeMori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, Z. L. Dou, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, R. Farinelli, L. Fava, O. Fedorov, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, F. H. Heinsius, T. Held, Y. K. Heng, T. Holtmann, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Y. Huang, Z. L. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, A. Kupsc, W. Kuhn, J. S. Lange, M. Lara, P. Larin, H. Leithoff, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, Q. Y. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Y. B. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Y. Y. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, Y. M. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, G. Mezzadri, J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, N. Yu. Muchnoi, H. Muramatsu, P. Musiol, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, H. R. Qi, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, A. Sarantsev, M. Savri, C. Schnier, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, I. Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Y. N. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

By analyzing $2.93\ \rm fb^{-1}$ of data taken at the $\psi(3770)$ resonance peak with the BESIII detector, we measure the branching fractions for the hadronic decays $D^+\to K^0_SK^0_S K^+$, $D^+\to K^0_SK^0_S \pi^+$, $D^0\to K^0_S K^0_S$ and $D^0\to K^0_SK^0_SK^0_S$. They are determined to be ${\mathcal B}(D^+\to K^0_SK^0_SK^+)=(2. Read More

2016Nov
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. Chen Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, X. Q. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. M. Huang, G. S. Huang, J. S. Huang, X. T. Huang, Y. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, J. S. Lange, M. Lara, P. Larin, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. M. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, J. J. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, V. Santoro, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, X. Y. Zhang, Y. Zhang, Y. N. Zhang, Y. H. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

The cross section for the process $e^+e^-\to \pi^+\pi^-J/\psi$ is measured precisely at center-of-mass energies from 3.77 to 4.60~GeV using 9~fb$^{-1}$ of data collected with the BESIII detector operating at the BEPCII storage ring. Read More

2016Oct
Authors: M. Ablikim1, M. N. Achasov2, S. Ahmed3, X. C. Ai4, O. Albayrak5, M. Albrecht6, D. J. Ambrose7, A. Amoroso8, F. F. An9, Q. An10, J. Z. Bai11, O. Bakina12, R. Baldini Ferroli13, Y. Ban14, D. W. Bennett15, J. V. Bennett16, N. Berger17, M. Bertani18, D. Bettoni19, J. M. Bian20, F. Bianchi21, E. Boger22, I. Boyko23, R. A. Briere24, H. Cai25, X. Cai26, O. Cakir27, A. Calcaterra28, G. F. Cao29, S. A. Cetin30, J. Chai31, J. F. Chang32, G. Chelkov33, G. Chen34, H. S. Chen35, J. C. Chen36, M. L. Chen37, S. Chen38, S. J. Chen39, X. Chen40, X. R. Chen41, Y. B. Chen42, H. P. Cheng43, X. K. Chu44, G. Cibinetto45, H. L. Dai46, J. P. Dai47, A. Dbeyssi48, D. Dedovich49, Z. Y. Deng50, A. Denig51, I. Denysenko52, M. Destefanis53, F. De Mori54, Y. Ding55, C. Dong56, J. Dong57, L. Y. Dong58, M. Y. Dong59, Z. L. Dou60, S. X. Du61, P. F. Duan62, J. Z. Fan63, J. Fang64, S. S. Fang65, X. Fang66, Y. Fang67, R. Farinelli68, L. Fava69, F. Feldbauer70, G. Felici71, C. Q. Feng72, E. Fioravanti73, M. Fritsch74, C. D. Fu75, Q. Gao76, X. L. Gao77, Y. Gao78, Z. Gao79, I. Garzia80, K. Goetzen81, L. Gong82, W. X. Gong83, W. Gradl84, M. Greco85, M. H. Gu86, Y. T. Gu87, Y. H. Guan88, A. Q. Guo89, L. B. Guo90, R. P. Guo91, Y. Guo92, Y. P. Guo93, Z. Haddadi94, A. Hafner95, S. Han96, X. Q. Hao97, F. A. Harris98, K. L. He99, F. H. Heinsius100, T. Held101, Y. K. Heng102, T. Holtmann103, Z. L. Hou104, C. Hu105, H. M. Hu106, J. F. Hu107, T. Hu108, Y. Hu109, G. S. Huang110, J. S. Huang111, X. T. Huang112, X. Z. Huang113, Y. Huang114, Z. L. Huang115, T. Hussain116, W. Ikegami Andersson117, Q. Ji118, Q. P. Ji119, X. B. Ji120, X. L. Ji121, L. W. Jiang122, X. S. Jiang123, X. Y. Jiang124, J. B. Jiao125, Z. Jiao126, D. P. Jin127, S. Jin128, T. Johansson129, A. Julin130, N. Kalantar-Nayestanaki131, X. L. Kang132, X. S. Kang133, M. Kavatsyuk134, B. C. Ke135, P. Kiese136, R. Kliemt137, B. Kloss138, O. B. Kolcu139, B. Kopf140, M. Kornicer141, A. Kupsc142, W. Kühn143, J. S. Lange144, M. Lara145, P. Larin146, H. Leithoff147, C. Leng148, C. Li149, Cheng Li150, D. M. Li151, F. Li152, F. Y. Li153, G. Li154, H. B. Li155, H. J. Li156, J. C. Li157, Jin Li158, K. Li159, K. Li160, Lei Li161, P. R. Li162, Q. Y. Li163, T. Li164, W. D. Li165, W. G. Li166, X. L. Li167, X. N. Li168, X. Q. Li169, Y. B. Li170, Z. B. Li171, H. Liang172, Y. F. Liang173, Y. T. Liang174, G. R. Liao175, D. X. Lin176, B. Liu177, B. J. Liu178, C. X. Liu179, D. Liu180, F. H. Liu181, Fang Liu182, Feng Liu183, H. B. Liu184, H. H. Liu185, H. H. Liu186, H. M. Liu187, J. Liu188, J. B. Liu189, J. P. Liu190, J. Y. Liu191, K. Liu192, K. Y. Liu193, L. D. Liu194, P. L. Liu195, Q. Liu196, S. B. Liu197, X. Liu198, Y. B. Liu199, Y. Y. Liu200, Z. A. Liu201, Zhiqing Liu202, H. Loehner203, Y. F. Long204, X. C. Lou205, H. J. Lu206, J. G. Lu207, Y. Lu208, Y. P. Lu209, C. L. Luo210, M. X. Luo211, T. Luo212, X. L. Luo213, X. R. Lyu214, F. C. Ma215, H. L. Ma216, L. L. Ma217, M. M. Ma218, Q. M. Ma219, T. Ma220, X. N. Ma221, X. Y. Ma222, Y. M. Ma223, F. E. Maas224, M. Maggiora225, Q. A. Malik226, Y. J. Mao227, Z. P. Mao228, S. Marcello229, J. G. Messchendorp230, G. Mezzadri231, J. Min232, T. J. Min233, R. E. Mitchell234, X. H. Mo235, Y. J. Mo236, C. Morales Morales237, N. Yu. Muchnoi238, H. Muramatsu239, P. Musiol240, Y. Nefedov241, F. Nerling242, I. B. Nikolaev243, Z. Ning244, S. Nisar245, S. L. Niu246, X. Y. Niu247, S. L. Olsen248, Q. Ouyang249, S. Pacetti250, Y. Pan251, P. Patteri252, M. Pelizaeus253, H. P. Peng254, K. Peters255, J. Pettersson256, J. L. Ping257, R. G. Ping258, R. Poling259, V. Prasad260, H. R. Qi261, M. Qi262, S. Qian263, C. F. Qiao264, L. Q. Qin265, N. Qin266, X. S. Qin267, Z. H. Qin268, J. F. Qiu269, K. H. Rashid270, C. F. Redmer271, M. Ripka272, G. Rong273, Ch. Rosner274, X. D. Ruan275, A. Sarantsev276, M. Savrié277, C. Schnier278, K. Schoenning279, S. Schumann280, W. Shan281, M. Shao282, C. P. Shen283, P. X. Shen284, X. Y. Shen285, H. Y. Sheng286, M. Shi287, W. M. Song288, X. Y. Song289, S. Sosio290, S. Spataro291, G. X. Sun292, J. F. Sun293, S. S. Sun294, X. H. Sun295, Y. J. Sun296, Y. Z. Sun297, Z. J. Sun298, Z. T. Sun299, C. J. Tang300, X. Tang301, I. Tapan302, E. H. Thorndike303, M. Tiemens304, I. Uman305, G. S. Varner306, B. Wang307, B. L. Wang308, D. Wang309, D. Y. Wang310, K. Wang311, L. L. Wang312, L. S. Wang313, M. Wang314, P. Wang315, P. L. Wang316, W. Wang317, W. P. Wang318, X. F. Wang319, Y. Wang320, Y. D. Wang321, Y. F. Wang322, Y. Q. Wang323, Z. Wang324, Z. G. Wang325, Z. H. Wang326, Z. Y. Wang327, Z. Y. Wang328, T. Weber329, D. H. Wei330, P. Weidenkaff331, S. P. Wen332, U. Wiedner333, M. Wolke334, L. H. Wu335, L. J. Wu336, Z. Wu337, L. Xia338, L. G. Xia339, Y. Xia340, D. Xiao341, H. Xiao342, Z. J. Xiao343, Y. G. Xie344, Q. L. Xiu345, G. F. Xu346, J. J. Xu347, L. Xu348, Q. J. Xu349, Q. N. Xu350, X. P. Xu351, L. Yan352, W. B. Yan353, W. C. Yan354, Y. H. Yan355, H. J. Yang356, H. X. Yang357, L. Yang358, Y. X. Yang359, M. Ye360, M. H. Ye361, J. H. Yin362, Z. Y. You363, B. X. Yu364, C. X. Yu365, J. S. Yu366, C. Z. Yuan367, W. L. Yuan368, Y. Yuan369, A. Yuncu370, A. A. Zafar371, A. Zallo372, Y. Zeng373, Z. Zeng374, B. X. Zhang375, B. Y. Zhang376, C. Zhang377, C. C. Zhang378, D. H. Zhang379, H. H. Zhang380, H. Y. Zhang381, J. Zhang382, J. J. Zhang383, J. L. Zhang384, J. Q. Zhang385, J. W. Zhang386, J. Y. Zhang387, J. Z. Zhang388, K. Zhang389, L. Zhang390, S. Q. Zhang391, X. Y. Zhang392, Y. Zhang393, Y. Zhang394, Y. H. Zhang395, Y. N. Zhang396, Y. T. Zhang397, Yu Zhang398, Z. H. Zhang399, Z. P. Zhang400, Z. Y. Zhang401, G. Zhao402, J. W. Zhao403, J. Y. Zhao404, J. Z. Zhao405, Lei Zhao406, Ling Zhao407, M. G. Zhao408, Q. Zhao409, Q. W. Zhao410, S. J. Zhao411, T. C. Zhao412, Y. B. Zhao413, Z. G. Zhao414, A. Zhemchugov415, B. Zheng416, J. P. Zheng417, W. J. Zheng418, Y. H. Zheng419, B. Zhong420, L. Zhou421, X. Zhou422, X. K. Zhou423, X. R. Zhou424, X. Y. Zhou425, K. Zhu426, K. J. Zhu427, S. Zhu428, S. H. Zhu429, X. L. Zhu430, Y. C. Zhu431, Y. S. Zhu432, Z. A. Zhu433, J. Zhuang434, L. Zotti435, B. S. Zou436, J. H. Zou437
Affiliations: 1Institute of High Energy Physics, Beijing 100049, People's Republic of China, 29, e, 3Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 4Institute of High Energy Physics, Beijing 100049, People's Republic of China, 5Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA, 6Bochum Ruhr-University, D-44780 Bochum, Germany, 7University of Rochester, Rochester, New York 14627, USA, 849A,49C, 9Institute of High Energy Physics, Beijing 100049, People's Republic of China, 1046, a, 11Institute of High Energy Physics, Beijing 100049, People's Republic of China, 12Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia, 1320A, 14Peking University, Beijing 100871, People's Republic of China, 15Indiana University, Bloomington, Indiana 47405, USA, 16Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA, 17Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 1820A, 1921A, 20University of Minnesota, Minneapolis, Minnesota 55455, USA, 2149A,49C, 2223, c, 23Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia, 24Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA, 25Wuhan University, Wuhan 430072, People's Republic of China, 261, a, 2740A, 2820A, 29Institute of High Energy Physics, Beijing 100049, People's Republic of China, 3040B, 3149C, 321, a, 3323, c, d, 34Institute of High Energy Physics, Beijing 100049, People's Republic of China, 35Institute of High Energy Physics, Beijing 100049, People's Republic of China, 36Institute of High Energy Physics, Beijing 100049, People's Republic of China, 371, a, 38Institute of High Energy Physics, Beijing 100049, People's Republic of China, 39Nanjing University, Nanjing 210093, People's Republic of China, 401, a, 41Lanzhou University, Lanzhou 730000, People's Republic of China, 421, a, 43Huangshan College, Huangshan 245000, People's Republic of China, 44Peking University, Beijing 100871, People's Republic of China, 4521A, 461, a, 47Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China, 48Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 49Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia, 50Institute of High Energy Physics, Beijing 100049, People's Republic of China, 51Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 52Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia, 5349A,49C, 5449A,49C, 55Liaoning University, Shenyang 110036, People's Republic of China, 56Nankai University, Tianjin 300071, People's Republic of China, 571, a, 58Institute of High Energy Physics, Beijing 100049, People's Republic of China, 591, a, 60Nanjing University, Nanjing 210093, People's Republic of China, 61Zhengzhou University, Zhengzhou 450001, People's Republic of China, 62Institute of High Energy Physics, Beijing 100049, People's Republic of China, 63Tsinghua University, Beijing 100084, People's Republic of China, 641, a, 65Institute of High Energy Physics, Beijing 100049, People's Republic of China, 6646, a, 67Institute of High Energy Physics, Beijing 100049, People's Republic of China, 6821A,21B, 6949B,49C, 70Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 7120A, 7246, a, 7321A, 74Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 75Institute of High Energy Physics, Beijing 100049, People's Republic of China, 76Institute of High Energy Physics, Beijing 100049, People's Republic of China, 7746, a, 78Tsinghua University, Beijing 100084, People's Republic of China, 7946, a, 8021A, 81GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany, 82Nankai University, Tianjin 300071, People's Republic of China, 831, a, 84Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 8549A,49C, 861, a, 87Guangxi University, Nanning 530004, People's Republic of China, 88Institute of High Energy Physics, Beijing 100049, People's Republic of China, 89Institute of High Energy Physics, Beijing 100049, People's Republic of China, 90Nanjing Normal University, Nanjing 210023, People's Republic of China, 91Institute of High Energy Physics, Beijing 100049, People's Republic of China, 92Institute of High Energy Physics, Beijing 100049, People's Republic of China, 93Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 94KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands, 95Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 96Wuhan University, Wuhan 430072, People's Republic of China, 97Henan Normal University, Xinxiang 453007, People's Republic of China, 98University of Hawaii, Honolulu, Hawaii 96822, USA, 99Institute of High Energy Physics, Beijing 100049, People's Republic of China, 100Bochum Ruhr-University, D-44780 Bochum, Germany, 101Bochum Ruhr-University, D-44780 Bochum, Germany, 1021, a, 103Bochum Ruhr-University, D-44780 Bochum, Germany, 104Institute of High Energy Physics, Beijing 100049, People's Republic of China, 105Nanjing Normal University, Nanjing 210023, People's Republic of China, 106Institute of High Energy Physics, Beijing 100049, People's Republic of China, 10749A,49C, 1081, a, 109Institute of High Energy Physics, Beijing 100049, People's Republic of China, 11046, a, 111Henan Normal University, Xinxiang 453007, People's Republic of China, 112Shandong University, Jinan 250100, People's Republic of China, 113Nanjing University, Nanjing 210093, People's Republic of China, 114Nanjing University, Nanjing 210093, People's Republic of China, 115Liaoning University, Shenyang 110036, People's Republic of China, 116University of the Punjab, Lahore-54590, Pakistan, 117Uppsala University, Box 516, SE-75120 Uppsala, Sweden, 118Institute of High Energy Physics, Beijing 100049, People's Republic of China, 119Henan Normal University, Xinxiang 453007, People's Republic of China, 120Institute of High Energy Physics, Beijing 100049, People's Republic of China, 1211, a, 122Wuhan University, Wuhan 430072, People's Republic of China, 1231, a, 124Nankai University, Tianjin 300071, People's Republic of China, 125Shandong University, Jinan 250100, People's Republic of China, 126Huangshan College, Huangshan 245000, People's Republic of China, 1271, a, 128Institute of High Energy Physics, Beijing 100049, People's Republic of China, 129Uppsala University, Box 516, SE-75120 Uppsala, Sweden, 130University of Minnesota, Minneapolis, Minnesota 55455, USA, 131KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands, 132Institute of High Energy Physics, Beijing 100049, People's Republic of China, 133Nankai University, Tianjin 300071, People's Republic of China, 134KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands, 135Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA, 136Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 137GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany, 138Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 13940B, h, 140Bochum Ruhr-University, D-44780 Bochum, Germany, 141University of Hawaii, Honolulu, Hawaii 96822, USA, 142Uppsala University, Box 516, SE-75120 Uppsala, Sweden, 143Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany, 144Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany, 145Indiana University, Bloomington, Indiana 47405, USA, 146Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 147Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 14849C, 149Uppsala University, Box 516, SE-75120 Uppsala, Sweden, 15046, a, 151Zhengzhou University, Zhengzhou 450001, People's Republic of China, 1521, a, 153Peking University, Beijing 100871, People's Republic of China, 154Institute of High Energy Physics, Beijing 100049, People's Republic of China, 155Institute of High Energy Physics, Beijing 100049, People's Republic of China, 156Institute of High Energy Physics, Beijing 100049, People's Republic of China, 157Institute of High Energy Physics, Beijing 100049, People's Republic of China, 158Seoul National University, Seoul, 151-747 Korea, 159Shandong University, Jinan 250100, People's Republic of China, 160Shandong University, Jinan 250100, People's Republic of China, 161Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China, 162University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 163Shandong University, Jinan 250100, People's Republic of China, 164Shandong University, Jinan 250100, People's Republic of China, 165Institute of High Energy Physics, Beijing 100049, People's Republic of China, 166Institute of High Energy Physics, Beijing 100049, People's Republic of China, 167Shandong University, Jinan 250100, People's Republic of China, 1681, a, 169Nankai University, Tianjin 300071, People's Republic of China, 170Beihang University, Beijing 100191, People's Republic of China, 171Sun Yat-Sen University, Guangzhou 510275, People's Republic of China, 17246, a, 173Sichuan University, Chengdu 610064, People's Republic of China, 174Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany, 175Guangxi Normal University, Guilin 541004, People's Republic of China, 176Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 177Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China, 178Institute of High Energy Physics, Beijing 100049, People's Republic of China, 179Institute of High Energy Physics, Beijing 100049, People's Republic of China, 18046, a, 181Shanxi University, Taiyuan 030006, People's Republic of China, 182Institute of High Energy Physics, Beijing 100049, People's Republic of China, 183Central China Normal University, Wuhan 430079, People's Republic of China, 184Guangxi University, Nanning 530004, People's Republic of China, 185Institute of High Energy Physics, Beijing 100049, People's Republic of China, 186Institute of High Energy Physics, Beijing 100049, People's Republic of China, 187Institute of High Energy Physics, Beijing 100049, People's Republic of China, 188Institute of High Energy Physics, Beijing 100049, People's Republic of China, 18946, a, 190Wuhan University, Wuhan 430072, People's Republic of China, 191Institute of High Energy Physics, Beijing 100049, People's Republic of China, 192Tsinghua University, Beijing 100084, People's Republic of China, 193Liaoning University, Shenyang 110036, People's Republic of China, 194Peking University, Beijing 100871, People's Republic of China, 1951, a, 196University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 19746, a, 198Institute of High Energy Physics, Beijing 100049, People's Republic of China, 199Nankai University, Tianjin 300071, People's Republic of China, 200Nankai University, Tianjin 300071, People's Republic of China, 2011, a, 202Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 203KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands, 204Peking University, Beijing 100871, People's Republic of China, 2051, a, g, 206Huangshan College, Huangshan 245000, People's Republic of China, 2071, a, 208Institute of High Energy Physics, Beijing 100049, People's Republic of China, 2091, a, 210Nanjing Normal University, Nanjing 210023, People's Republic of China, 211Zhejiang University, Hangzhou 310027, People's Republic of China, 212University of Hawaii, Honolulu, Hawaii 96822, USA, 2131, a, 214University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 215Liaoning University, Shenyang 110036, People's Republic of China, 216Institute of High Energy Physics, Beijing 100049, People's Republic of China, 217Shandong University, Jinan 250100, People's Republic of China, 218Institute of High Energy Physics, Beijing 100049, People's Republic of China, 219Institute of High Energy Physics, Beijing 100049, People's Republic of China, 220Institute of High Energy Physics, Beijing 100049, People's Republic of China, 221Nankai University, Tianjin 300071, People's Republic of China, 2221, a, 223Shandong University, Jinan 250100, People's Republic of China, 224Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 22549A,49C, 226University of the Punjab, Lahore-54590, Pakistan, 227Peking University, Beijing 100871, People's Republic of China, 228Institute of High Energy Physics, Beijing 100049, People's Republic of China, 22949A,49C, 230KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands, 23121B, 2321, a, 233Institute of High Energy Physics, Beijing 100049, People's Republic of China, 234Indiana University, Bloomington, Indiana 47405, USA, 2351, a, 236Central China Normal University, Wuhan 430079, People's Republic of China, 237Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 2389, e, 239University of Minnesota, Minneapolis, Minnesota 55455, USA, 240Bochum Ruhr-University, D-44780 Bochum, Germany, 241Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia, 242GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany, 2439, e, 2441, a, 245COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan, 2461, a, 247Institute of High Energy Physics, Beijing 100049, People's Republic of China, 248Seoul National University, Seoul, 151-747 Korea, 2491, a, 25020B, 25146, a, 25220A, 253Bochum Ruhr-University, D-44780 Bochum, Germany, 25446, a, 25510, i, 256Uppsala University, Box 516, SE-75120 Uppsala, Sweden, 257Nanjing Normal University, Nanjing 210023, People's Republic of China, 258Institute of High Energy Physics, Beijing 100049, People's Republic of China, 259University of Minnesota, Minneapolis, Minnesota 55455, USA, 260Institute of High Energy Physics, Beijing 100049, People's Republic of China, 261Beihang University, Beijing 100191, People's Republic of China, 262Nanjing University, Nanjing 210093, People's Republic of China, 2631, a, 264University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 265Shandong University, Jinan 250100, People's Republic of China, 266Wuhan University, Wuhan 430072, People's Republic of China, 267Institute of High Energy Physics, Beijing 100049, People's Republic of China, 2681, a, 269Institute of High Energy Physics, Beijing 100049, People's Republic of China, 270University of the Punjab, Lahore-54590, Pakistan, 271Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 272Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 273Institute of High Energy Physics, Beijing 100049, People's Republic of China, 274Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 275Guangxi University, Nanning 530004, People's Republic of China, 27623, f, 27721B, 278Bochum Ruhr-University, D-44780 Bochum, Germany, 279Uppsala University, Box 516, SE-75120 Uppsala, Sweden, 280Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 281Peking University, Beijing 100871, People's Republic of China, 28246, a, 283Beihang University, Beijing 100191, People's Republic of China, 284Nankai University, Tianjin 300071, People's Republic of China, 285Institute of High Energy Physics, Beijing 100049, People's Republic of China, 286Institute of High Energy Physics, Beijing 100049, People's Republic of China, 287Institute of High Energy Physics, Beijing 100049, People's Republic of China, 288Institute of High Energy Physics, Beijing 100049, People's Republic of China, 289Institute of High Energy Physics, Beijing 100049, People's Republic of China, 29049A,49C, 29149A,49C, 292Institute of High Energy Physics, Beijing 100049, People's Republic of China, 293Henan Normal University, Xinxiang 453007, People's Republic of China, 294Institute of High Energy Physics, Beijing 100049, People's Republic of China, 295Institute of High Energy Physics, Beijing 100049, People's Republic of China, 29646, a, 297Institute of High Energy Physics, Beijing 100049, People's Republic of China, 2981, a, 299Indiana University, Bloomington, Indiana 47405, USA, 300Sichuan University, Chengdu 610064, People's Republic of China, 301Institute of High Energy Physics, Beijing 100049, People's Republic of China, 30240C, 303University of Rochester, Rochester, New York 14627, USA, 304KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands, 30540D, 306University of Hawaii, Honolulu, Hawaii 96822, USA, 307Nankai University, Tianjin 300071, People's Republic of China, 308University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 309Peking University, Beijing 100871, People's Republic of China, 310Peking University, Beijing 100871, People's Republic of China, 3111, a, 312Institute of High Energy Physics, Beijing 100049, People's Republic of China, 313Institute of High Energy Physics, Beijing 100049, People's Republic of China, 314Shandong University, Jinan 250100, People's Republic of China, 315Institute of High Energy Physics, Beijing 100049, People's Republic of China, 316Institute of High Energy Physics, Beijing 100049, People's Republic of China, 3171, a, 31846, a, 319Tsinghua University, Beijing 100084, People's Republic of China, 320Peking University, Beijing 100871, People's Republic of China, 321Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 3221, a, 323Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 3241, a, 3251, a, 32646, a, 327Institute of High Energy Physics, Beijing 100049, People's Republic of China, 328Institute of High Energy Physics, Beijing 100049, People's Republic of China, 329Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 330Guangxi Normal University, Guilin 541004, People's Republic of China, 331Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany, 332Institute of High Energy Physics, Beijing 100049, People's Republic of China, 333Bochum Ruhr-University, D-44780 Bochum, Germany, 334Uppsala University, Box 516, SE-75120 Uppsala, Sweden, 335Institute of High Energy Physics, Beijing 100049, People's Republic of China, 336Institute of High Energy Physics, Beijing 100049, People's Republic of China, 3371, a, 33846, a, 339Tsinghua University, Beijing 100084, People's Republic of China, 340Hunan University, Changsha 410082, People's Republic of China, 341Institute of High Energy Physics, Beijing 100049, People's Republic of China, 342University of South China, Hengyang 421001, People's Republic of China, 343Nanjing Normal University, Nanjing 210023, People's Republic of China, 3441, a, 3451, a, 346Institute of High Energy Physics, Beijing 100049, People's Republic of China, 347Institute of High Energy Physics, Beijing 100049, People's Republic of China, 348Institute of High Energy Physics, Beijing 100049, People's Republic of China, 349Hangzhou Normal University, Hangzhou 310036, People's Republic of China, 350University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 351Soochow University, Suzhou 215006, People's Republic of China, 35249A,49C, 35346, a, 35446, a, 355Hunan University, Changsha 410082, People's Republic of China, 35634, j, 357Institute of High Energy Physics, Beijing 100049, People's Republic of China, 358Wuhan University, Wuhan 430072, People's Republic of China, 359Guangxi Normal University, Guilin 541004, People's Republic of China, 3601, a, 361China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China, 362Institute of High Energy Physics, Beijing 100049, People's Republic of China, 363Sun Yat-Sen University, Guangzhou 510275, People's Republic of China, 3641, a, 365Nankai University, Tianjin 300071, People's Republic of China, 366Lanzhou University, Lanzhou 730000, People's Republic of China, 367Institute of High Energy Physics, Beijing 100049, People's Republic of China, 368Nanjing University, Nanjing 210093, People's Republic of China, 369Institute of High Energy Physics, Beijing 100049, People's Republic of China, 37040B, b, 371University of the Punjab, Lahore-54590, Pakistan, 37220A, 373Hunan University, Changsha 410082, People's Republic of China, 37446, a, 375Institute of High Energy Physics, Beijing 100049, People's Republic of China, 3761, a, 377Nanjing University, Nanjing 210093, People's Republic of China, 378Institute of High Energy Physics, Beijing 100049, People's Republic of China, 379Institute of High Energy Physics, Beijing 100049, People's Republic of China, 380Sun Yat-Sen University, Guangzhou 510275, People's Republic of China, 3811, a, 382Institute of High Energy Physics, Beijing 100049, People's Republic of China, 383Institute of High Energy Physics, Beijing 100049, People's Republic of China, 384Institute of High Energy Physics, Beijing 100049, People's Republic of China, 385Institute of High Energy Physics, Beijing 100049, People's Republic of China, 3861, a, 387Institute of High Energy Physics, Beijing 100049, People's Republic of China, 388Institute of High Energy Physics, Beijing 100049, People's Republic of China, 389Institute of High Energy Physics, Beijing 100049, People's Republic of China, 390Institute of High Energy Physics, Beijing 100049, People's Republic of China, 391Nankai University, Tianjin 300071, People's Republic of China, 392Shandong University, Jinan 250100, People's Republic of China, 3931, a, 3941, a, 3951, a, 396University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 39746, a, 398University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 399Central China Normal University, Wuhan 430079, People's Republic of China, 400University of Science and Technology of China, Hefei 230026, People's Republic of China, 401Wuhan University, Wuhan 430072, People's Republic of China, 402Institute of High Energy Physics, Beijing 100049, People's Republic of China, 4031, a, 404Institute of High Energy Physics, Beijing 100049, People's Republic of China, 4051, a, 40646, a, 407Institute of High Energy Physics, Beijing 100049, People's Republic of China, 408Nankai University, Tianjin 300071, People's Republic of China, 409Institute of High Energy Physics, Beijing 100049, People's Republic of China, 410Institute of High Energy Physics, Beijing 100049, People's Republic of China, 411Zhengzhou University, Zhengzhou 450001, People's Republic of China, 412Institute of High Energy Physics, Beijing 100049, People's Republic of China, 4131, a, 41446, a, 41523, c, 416University of South China, Hengyang 421001, People's Republic of China, 4171, a, 418Shandong University, Jinan 250100, People's Republic of China, 419University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China, 420Nanjing Normal University, Nanjing 210023, People's Republic of China, 4211, a, 422Wuhan University, Wuhan 430072, People's Republic of China, 42346, a, 42446, a, 425Institute of High Energy Physics, Beijing 100049, People's Republic of China, 426Institute of High Energy Physics, Beijing 100049, People's Republic of China, 4271, a, 428Institute of High Energy Physics, Beijing 100049, People's Republic of China, 429University of Science and Technology Liaoning, Anshan 114051, People's Republic of China, 430Tsinghua University, Beijing 100084, People's Republic of China, 43146, a, 432Institute of High Energy Physics, Beijing 100049, People's Republic of China, 433Institute of High Energy Physics, Beijing 100049, People's Republic of China, 4341, a, 43549A,49C, 436Institute of High Energy Physics, Beijing 100049, People's Republic of China, 437Institute of High Energy Physics, Beijing 100049, People's Republic of China

Using $448.0 \times 10^6$~$\psi(3686)$ events collected with the BESIII detector, an amplitude analysis is performed for $\psi(3686)\to\gamma\chi_{c1}$, $\chi_{c1}\to\eta\pi^+\pi^-$ decays. The most dominant two-body structure observed is $a_0(980)^{\pm}\pi^{\mp}$; $a_0(980)^{\pm}\to\eta\pi^{\pm}$. Read More

There has been considerable interest in exploiting the spin degrees of freedom of electrons for potential information storage and computing technologies. Topological insulators (TI), a class of quantum materials, have special gapless edge/surface states, where the spin polarization of the Dirac fermions is locked to the momentum direction. This spin-momentum locking property gives rise to very interesting spin-dependent physical phenomena such as the Edelstein and inverse Edelstein effects. Read More

In this paper, the dependence of the broad Fe K$\alpha$ line on the physical parameters of AGN, such as the black hole mass $M_{BH}$, accretion rate (equivalently represented by Eddington ratio $\lambda_{Edd}$), and optical classification, is investigated by applying the X-ray spectra stacking method to a large sample of AGN which have well measured optical parameters. A broad line feature is detected ($>3\sigma$) in the stacked spectra of the high $\lambda_{Edd}$ sub-sample ($\log\lambda_{Edd}>-0.9$). Read More

In this article, we investigate the volume comparison with respect to scalar curvature. In particular, we show volume comparison hold for small geodesic balls of metrics near $V$-static metrics. As for global results, we give volume comparison for metrics near Einstein metrics with certain restrictions. Read More

The Rashba physics has been intensively studied in the field of spin orbitronics, for the purpose of searching novel physical properties and the FM magnetization switching for technology applications. Here, we report the observation of the inverse Edelstein effect up to room temperature in the Rashba-split 2DEG between two insulating oxides SrTiO3 and LaAlO3 with the LaAlO3 layer thickness from 3 to 40 unit cells (UC). We further demonstrate that the spin voltage could be dramatically manipulated by electric field effect for the 2DEG between SrTiO3 and 3 UC LaAlO3. Read More

We develop a non-linear semi-parametric Gaussian process model to estimate periods of Miras with sparsely-sampled light curves. The model uses a sinusoidal basis for the periodic variation and a Gaussian process for the stochastic changes. We use maximum likelihood to estimate the period and the parameters of the Gaussian process, while integrating out the effects of other nuisance parameters in the model with respect to a suitable prior distribution obtained from earlier studies. Read More

We report the discovery of a positive exchange bias between Ni80Fe20 (Py) and twined (10-10)-Cr2O3 film near its blocking temperature (TB) when it is cooled in an in-plane magnetic field applied along 45 degrees from the two spin configurations of the Cr atoms. This is an abnormal behavior compared to the negative exchange bias at all temperatures below TB when the cooling and measuring magnetic fields are applied along one of the two spin configurations of the Cr atoms. We speculate these results could be related to the exchange interactions between the twined structure of the (10-10)-Cr2O3 film epitaxially grown on the rutile (001)-TiO2 substrate. Read More

2016Aug
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. Chen Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, X. Q. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. M. Huang, G. S. Huang, J. S. Huang, X. T. Huang, Y. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, J. S. Lange, M. Lara, P. Larin, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. M. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, J. J. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, V. Santoro, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, X. Y. Zhang, Y. Zhang, Y. N. Zhang, Y. H. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

We present the first study of the process $J/\psi \rightarrow \gamma\eta\pi^{0}$ using $(223.7\pm1.4)\times10^{6}$ $J/\psi$ events accumulated with the BESIII detector at the BEPCII facility. Read More

2016Aug
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. Chen Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, X. Q. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. M. Huang, G. S. Huang, J. S. Huang, X. T. Huang, Y. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, J. S. Lange, M. Lara, P. Larin, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. M. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, J. J. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, V. Santoro, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, X. Y. Zhang, Y. Zhang, Y. N. Zhang, Y. H. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

Using 482~pb$^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy of $\sqrt{s} = 4.009$ GeV with the BESIII detector, we measure the branching fractions of the decays $D_s^+\to\mu^+\nu_\mu$ and $D_s^+\to\tau^+\nu_\tau$. By constraining the ratio of decay rates of $D_s^+$ to $\tau^+\nu_\tau$ and to $\mu^+\nu_\mu$ to the Standard Model prediction, the branching fractions are determined to be $\mathcal{B}(D_s^+ \to \mu^+\nu_\mu) = (0. Read More

2016Aug
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. Chen Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, X. Q. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. M. Huang, G. S. Huang, J. S. Huang, X. T. Huang, Y. Huang, T. Hussain, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, J. S. Lange, M. Lara, P. Larin, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. M. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, J. J. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, V. Santoro, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, S. G. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, X. Y. Zhang, Y. Zhang, Y. N. Zhang, Y. H. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

By analyzing 482 pb$^{-1}$ of $e^+e^-$ collision data collected at $\sqrt s=4.009$ GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays $D_{s}^{+}\to\eta e^{+}\nu_{e}$ and $D_{s}^{+}\to \eta'e^{+}\nu_{e}$ to be ${B}(D_{s}^{+}\rightarrow\eta e^{+}\nu_{e})=(2.30\pm0. Read More

2016Aug
Authors: BESIII collaboration, M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, O. Bakina, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, N. Berger, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. Chai, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, Z. L. Dou, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, R. Farinelli, L. Fava, S. Fegan, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. L. Gao, Y. Gao, Z. Gao, I. Garzia, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, X. Q. Hao, F. A. Harris, K. L. He, F. H. Heinsius, T. Held, Y. K. Heng, T. Holtmann, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Y. Huang, Z. L. Huang, T. Hussain, W. Ikegami Andersson, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. W. Jiang, X. S. Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, P. Kiese, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, A. Kupsc, W. Kühn, J. S. Lange, M. Lara, P. Larin, H. Leithoff, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. L. Li, P. R. Li, Q. Y. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Y. B. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Y. Y. Liu, Z. A. Liu, Zhiqing Liu, H. Loehner, Y. F. Long, X. C. Lou, H. J. Lu, J. G. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, T. Ma, X. N. Ma, X. Y. Ma, Y. M. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, G. Mezzadri, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, N. Yu. Muchnoi, H. Muramatsu, P. Musiol, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, Y. Pan, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, V. Prasad, H. R. Qi, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, Ch. Rosner, X. D. Ruan, A. Sarantsev, M. Savrié, C. Schnier, K. Schoenning S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, M. Shi, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, G. X. Sun, J. F. Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, M. Tiemens, I. Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, W. Wang, W. P. Wang, X. F. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, Z. Y. Wang, T. Weber, D. H. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. Wu, L. J. Wu, Z. Wu, L. Xia, L. G. Xia, Y. Xia, D. Xiao, H. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, H. X. Yang, L. Yang, Y. X. Yang, M. Ye, M. H. Ye, J. H. Yin, Z. Y. You, B. X. Yu, C. X. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Zhang, Y. Zhang, Y. H. Zhang, Y. N. Zhang, Y. T. Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou

Using 567 $pb^{-1}$ of data collected with the BESIII detector at a center-of-mass energy of $\sqrt{s}=$ 4.599 $GeV$, near the $\Lambda_{c}^{+}\Lambda_{c}^{-}$ threshold, we study the singly Cabibbo-suppressed decays $\Lambda_c^{+}\to p\pi^{+}\pi^{-}$ and $\Lambda_c^{+}\to pK^{+}K^{-}$. By normalizing with respect to the Cabibbo-favored decay $\Lambda_c^{+}\to pK^{-}\pi^{+}$, we obtain ratios of branching fractions: $\frac{\mathcal{B}(\Lambda_c^{+}\to p\pi^{+}\pi^{-})}{\mathcal{B}(\Lambda_c^{+}\to pK^{-}\pi^{+})}$ = $(6. Read More