Measurements of $B \rightarrow J/ψ$ at forward rapidity in $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV

2017Jan
Authors: C. Aidala, N. N. Ajitanand, Y. Akiba, R. Akimoto, J. Alexander, M. Alfred, K. Aoki, N. Apadula, H. Asano, E. T. Atomssa, A. Attila, T. C. Awes, C. Ayuso, B. Azmoun, V. Babintsev, M. Bai, X. Bai, B. Bannier, K. N. Barish, S. Bathe, V. Baublis, C. Baumann, S. Baumgart, A. Bazilevsky, M. Beaumier, R. Belmont, A. Berdnikov, Y. Berdnikov, D. Black, D. S. Blau, M. Boer, J. S. Bok, K. Boyle, M. L. Brooks, J. Bryslawskyj, H. Buesching, V. Bumazhnov, C. Butler, S. Butsyk, S. Campbell, C. CanoaRoman, C. -H. Chen, C. Y. Chi, M. Chiu, I. J. Choi, J. B. Choi, S. Choi, P. Christiansen, T. Chujo, V. Cianciolo, B. A. Cole, M. Connors, N. Cronin, N. Crossette, M. Csanád, T. Csörgő, T. W. Danley, A. Datta, M. S. Daugherity, G. David, K. DeBlasio, K. Dehmelt, A. Denisov, A. Deshpande, E. J. Desmond, L. Ding, J. H. Do, L. D'Orazio, O. Drapier, A. Drees, K. A. Drees, M. Dumancic, J. M. Durham, A. Durum, T. Elder, T. Engelmore, A. Enokizono, S. Esumi, K. O. Eyser, B. Fadem, W. Fan, N. Feege, D. E. Fields, M. Finger, M. Finger, \, Jr., F. Fleuret, S. L. Fokin, J. E. Frantz, A. Franz, A. D. Frawley, Y. Fukao, Y. Fukuda, T. Fusayasu, K. Gainey, C. Gal, P. Garg, A. Garishvili, I. Garishvili, H. Ge, F. Giordano, A. Glenn, X. Gong, M. Gonin, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, Y. Gu, T. Gunji, H. Guragain, T. Hachiya, J. S. Haggerty, K. I. Hahn, H. Hamagaki, S. Y. Han, J. Hanks, S. Hasegawa, T. O. S. Haseler, K. Hashimoto, R. Hayano, X. He, T. K. Hemmick, T. Hester, J. C. Hill, K. Hill, R. S. Hollis, K. Homma, B. Hong, T. Hoshino, N. Hotvedt, J. Huang, S. Huang, T. Ichihara, Y. Ikeda, K. Imai, Y. Imazu, M. Inaba, A. Iordanova, D. Isenhower, A. Isinhue, Y. Ito, D. Ivanishchev, B. V. Jacak, S. J. Jeon, M. Jezghani, Z Ji, J. Jia, X. Jiang, B. M. Johnson, K. S. Joo, V. Jorjadze, D. Jouan, D. S. Jumper, J. Kamin, S. Kanda, B. H. Kang, J. H. Kang, J. S. Kang, D. Kapukchyan, J. Kapustinsky, S. Karthas, D. Kawall, A. V. Kazantsev, J. A. Key, V. Khachatryan, P. K. Khandai, A. Khanzadeev, K. M. Kijima, C. Kim, D. J. Kim, E. -J. Kim, M. Kim, Y. -J. Kim, Y. K. Kim, D. Kincses, E. Kistenev, J. Klatsky, D. Kleinjan, P. Kline, T. Koblesky, M. Kofarago, B. Komkov, J. Koster, D. Kotchetkov, D. Kotov, F. Krizek, S. Kudo, K. Kurita, M. Kurosawa, Y. Kwon, R. Lacey, Y. S. Lai, J. G. Lajoie, E. O. Lallow, A. Lebedev, D. M. Lee, G. H. Lee, J. Lee, K. B. Lee, K. S. Lee, S. H. Lee, M. J. Leitch, M. Leitgab, Y. H. Leung, B. Lewis, N. A. Lewis, X. Li, X. Li, S. H. Lim, L. D. Liu, M. X. Liu, V. -R. Loggins, S. Lokos, D. Lynch, C. F. Maguire, Y. I. Makdisi, M. Makek, A. Manion, V. I. Manko, E. Mannel, M. McCumber, P. L. McGaughey, D. McGlinchey, C. McKinney, A. Meles, M. Mendoza, B. Meredith, Y. Miake, T. Mibe, A. C. Mignerey, D. E. M. Mihalik, A. Milov, D. K. Mishra, J. T. Mitchell, G. Mitsuka, S. Miyasaka, S. Mizuno, A. K. Mohanty, S. Mohapatra, T. Moon, D. P. Morrison, S. I. M. Morrow, M. Moskowitz, T. V. Moukhanova, T. Murakami, J. Murata, A. Mwai, T. Nagae, K. Nagai, S. Nagamiya, K. Nagashima, T. Nagashima, J. L. Nagle, M. I. Nagy, I. Nakagawa, H. Nakagomi, Y. Nakamiya, K. R. Nakamura, T. Nakamura, K. Nakano, C. Nattrass, P. K. Netrakanti, M. Nihashi, T. Niida, R. Nouicer, T. Novák, N. Novitzky, R. Novotny, A. S. Nyanin, E. O'Brien, C. A. Ogilvie, H. Oide, K. Okada, J. D. Orjuela Koop, J. D. Osborn, A. Oskarsson, K. Ozawa, R. Pak, V. Pantuev, V. Papavassiliou, I. H. Park, J. S. Park, S. Park, S. K. Park, S. F. Pate, L. Patel, M. Patel, J. -C. Peng, W. Peng, D. V. Perepelitsa, G. D. N. Perera, D. Yu. Peressounko, C. E. PerezLara, J. Perry, R. Petti, M. Phipps, C. Pinkenburg, R. P. Pisani, A. Pun, M. L. Purschke, H. Qu, P. V. Radzevich, J. Rak, I. Ravinovich, K. F. Read, D. Reynolds, V. Riabov, Y. Riabov, E. Richardson, D. Richford, T. Rinn, N. Riveli, D. Roach, S. D. Rolnick, M. Rosati, Z. Rowan, J. Runchey, M. S. Ryu, B. Sahlmueller, N. Saito, T. Sakaguchi, H. Sako, V. Samsonov, M. Sarsour, K. Sato, S. Sato, S. Sawada, B. Schaefer, B. K. Schmoll, K. Sedgwick, J. Seele, R. Seidl, Y. Sekiguchi, A. Sen, R. Seto, P. Sett, A. Sexton, D. Sharma, A. Shaver, I. Shein, T. -A. Shibata, K. Shigaki, M. Shimomura, K. Shoji, P. Shukla, A. Sickles, C. L. Silva, D. Silvermyr, B. K. Singh, C. P. Singh, V. Singh, M. J. Skoby, M. Skolnik, M. Slunečka, K. L. Smith, S. Solano, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, P. W. Stankus, P. Steinberg, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, M. R. Stone, T. Sugitate, A. Sukhanov, J. Sun, S. Syed, A. Takahara, A. Taketani, Y. Tanaka, K. Tanida, M. J. Tannenbaum, S. Tarafdar, A. Taranenko, G. Tarnai, E. Tennant, R. Tieulent, A. Timilsina, T. Todoroki, M. Tomášek, H. Torii, C. L. Towell, R. S. Towell, I. Tserruya, Y. Ueda, B. Ujvari, H. W. van Hecke, M. Vargyas, S Vazquez-Carson, E. Vazquez-Zambrano, A. Veicht, J. Velkovska, R. Vértesi, M. Virius, V. Vrba, E. Vznuzdaev, X. R. Wang, Z. Wang, D. Watanabe, K. Watanabe, Y. Watanabe, Y. S. Watanabe, F. Wei, S. Whitaker, S. Wolin, C. P. Wong, C. L. Woody, M. Wysocki, B. Xia, C. Xu, Q. Xu, Y. L. Yamaguchi, A. Yanovich, P Yin, S. Yokkaichi, J. H. Yoo, I. Yoon, Z. You, I. Younus, H. Yu, I. E. Yushmanov, W. A. Zajc, A. Zelenski, S. Zharko, S. Zhou, L. Zou

We report the first measurement of the fraction of $J/\psi$ mesons coming from $B$-meson decay ($F_{B{\rightarrow}J/\psi}$) in $p$+$p$ collisions at $\sqrt{s}=$ 510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of $J/\psi$ due to $B$-meson decays from prompt $J/\psi$. The measured value of $F_{B{\rightarrow}J/\psi}$ is 8.1\%$\pm$2.3\% (stat)$\pm$1.9\% (syst) for $J/\psi$ with transverse momenta $0

Comments: 431 authors, 17 pages, 11 figures, 4 tables, 2012 data. Submitted to Phys. Rev. D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

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Authors: LHCb collaboration, R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves Jr, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti, J. E. Andrews, R. B. Appleby, F. Archilli, P. d'Argent, J. Arnau Romeu, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, I. Babuschkin, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, S. Baker, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, F. Baryshnikov, M. Baszczyk, V. Batozskaya, B. Batsukh, V. Battista, A. Bay, L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, A. Beiter, L. J. Bel, V. Bellee, N. Belloli, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, A. Berezhnoy, R. Bernet, A. Bertolin, C. Betancourt, F. Betti, M. -O. Bettler, M. van Beuzekom, Ia. Bezshyiko, S. Bifani, P. Billoir, T. Bird, A. Birnkraut, A. Bitadze, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. 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The $B^0$, $B^0_s$, $B^+$ and $\Lambda^0_b$ hadron production asymmetries are measured using a data sample corresponding to an integrated luminosity of 3.0 fb$^{-1}$, collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The measurements are performed as a function of transverse momentum and rapidity of the $b$ hadrons within the LHCb detector acceptance. Read More


2017Mar
Authors: J. Adamczewski-Musch1, O. Arnold2, C. Behnke3, A. Belounnas4, A. Belyaev5, J. C. Berger-Chen6, J. Biernat7, A. Blanco8, C. Blume9, M. Böhmer10, P. Bordalo11, S. Chernenko12, L. Chlad13, C. Deveaux14, J. Dreyer15, A. Dybczak16, E. Epple17, L. Fabbietti18, O. Fateev19, P. Filip20, P. Fonte21, C. Franco22, J. Friese23, I. Fröhlich24, T. Galatyuk25, J. A. Garzon26, R. Gernhäuser27, M. Golubeva28, F. Guber29, M. Gumberidze30, S. Harabasz31, T. Heinz32, T. Hennino33, S. Hlavac34, C. Höhne35, R. Holzmann36, A. Ierusalimov37, A. Ivashkin38, B. Kämpfer39, T. Karavicheva40, B. Kardan41, I. Koenig42, W. Koenig43, B. W. Kolb44, G. Korcy45, G. Kornakov46, R. Kotte47, W. Kühn48, A. Kugler49, T. Kunz50, A. Kurepin51, A. Kurilkin52, P. Kurilkin53, V. Ladygin54, R. Lalik55, K. Lapidus56, A. Lebedev57, L. Lopes58, M. Lorenz59, T. Mahmoud60, L. Maier61, A. Mangiarotti62, J. Markert63, S. Maurus64, V. Metag65, J. Michel66, D. M. Mihaylov67, S. Morozov68, C. Müntz69, R. Münzer70, L. Naumann71, K. N. Nowakowski72, M. Palka73, Y. Parpottas74, V. Pechenov75, O. Pechenova76, O. Petukhov77, J. Pietraszko78, W. Przygoda79, S. Ramos80, B. Ramstein81, A. Reshetin82, P. Rodriguez-Ramos83, P. Rosier84, A. Rost85, A. Sadovsky86, P. Salabura87, T. Scheib88, H. Schuldes89, E. Schwab90, F. Scozzi91, F. Seck92, P. Sellheim93, J. Siebenson94, L. Silva95, Yu. G. Sobolev96, S. Spataro97, H. Ströbele98, J. Stroth99, P. Strzempek100, C. Sturm101, O. Svoboda102, M. Szala103, P. Tlusty104, M. Traxler105, H. Tsertos106, E. Usenko107, V. Wagner108, C. Wendisch109, M. G. Wiebusch110, J. Wirth111, Y. Zanevsky112, P. Zumbruch113
Affiliations: 1HADES collaboration, 2HADES collaboration, 3HADES collaboration, 4HADES collaboration, 5HADES collaboration, 6HADES collaboration, 7HADES collaboration, 8HADES collaboration, 9HADES collaboration, 10HADES collaboration, 11HADES collaboration, 12HADES collaboration, 13HADES collaboration, 14HADES collaboration, 15HADES collaboration, 16HADES collaboration, 17HADES collaboration, 18HADES collaboration, 19HADES collaboration, 20HADES collaboration, 21HADES collaboration, 22HADES collaboration, 23HADES collaboration, 24HADES collaboration, 25HADES collaboration, 26HADES collaboration, 27HADES collaboration, 28HADES collaboration, 29HADES collaboration, 30HADES collaboration, 31HADES collaboration, 32HADES collaboration, 33HADES collaboration, 34HADES collaboration, 35HADES collaboration, 36HADES collaboration, 37HADES collaboration, 38HADES collaboration, 39HADES collaboration, 40HADES collaboration, 41HADES collaboration, 42HADES collaboration, 43HADES collaboration, 44HADES collaboration, 45HADES collaboration, 46HADES collaboration, 47HADES collaboration, 48HADES collaboration, 49HADES collaboration, 50HADES collaboration, 51HADES collaboration, 52HADES collaboration, 53HADES collaboration, 54HADES collaboration, 55HADES collaboration, 56HADES collaboration, 57HADES collaboration, 58HADES collaboration, 59HADES collaboration, 60HADES collaboration, 61HADES collaboration, 62HADES collaboration, 63HADES collaboration, 64HADES collaboration, 65HADES collaboration, 66HADES collaboration, 67HADES collaboration, 68HADES collaboration, 69HADES collaboration, 70HADES collaboration, 71HADES collaboration, 72HADES collaboration, 73HADES collaboration, 74HADES collaboration, 75HADES collaboration, 76HADES collaboration, 77HADES collaboration, 78HADES collaboration, 79HADES collaboration, 80HADES collaboration, 81HADES collaboration, 82HADES collaboration, 83HADES collaboration, 84HADES collaboration, 85HADES collaboration, 86HADES collaboration, 87HADES collaboration, 88HADES collaboration, 89HADES collaboration, 90HADES collaboration, 91HADES collaboration, 92HADES collaboration, 93HADES collaboration, 94HADES collaboration, 95HADES collaboration, 96HADES collaboration, 97HADES collaboration, 98HADES collaboration, 99HADES collaboration, 100HADES collaboration, 101HADES collaboration, 102HADES collaboration, 103HADES collaboration, 104HADES collaboration, 105HADES collaboration, 106HADES collaboration, 107HADES collaboration, 108HADES collaboration, 109HADES collaboration, 110HADES collaboration, 111HADES collaboration, 112HADES collaboration, 113HADES collaboration

We present first data on charged kaons and {\phi} mesons in Au+Au collisions at a kinetic beam energy of 1.23A GeV. As observed already at slightly higher beam energies, we find significantly different slopes for the K+ and K- transverse-mass spectra, and no significant increase of the the K-/K+ multiplicity ratio with increasing centrality of the collision. Read More


As a successful theory for heavy quarkonium, nonrelativistic QCD (NRQCD) factorization now encounters some notable difficulties in describing quarkonium production. This may be due to the inadequate treatment of soft hadrons emitted in the hadronization process, which causes bad convergence of velocity expansion in NRQCD. In this paper, starting from QCD we propose a new factorization approach, soft gluon factorization (SGF), to better deal with the effects of soft hadrons. Read More


The LHCb RICH system provides hadron identification over a wide momentum range (2-100 GeV/c). This detector system is key to LHCb's precision flavour physics programme, which has unique sensitivity to physics beyond the standard model. This paper reports on the performance of the LHCb RICH in Run II, following significant changes in the detector and operating conditions. Read More


The ingredients for a model with a TeV right-handed scale, gauge coupling unification, and suitable dark matter candidates lie at the heart of left-right symmetry with broken D-parity. After detailing the contents of such a model we explore its dark matter implications and collider signatures. Read More


SKIROC2 is an ASIC to readout the silicon pad detectors for the electromagnetic calorimeter in the International Linear Collider. Characteristics of SKIROC2 and the new version of SKIROC2A, packaged with BGA, are measured with testboards and charge injection. The results on the signal-to-noise ratio of both trigger and ADC output, threshold tuning capability and timing resolution are presented. Read More