A. K. Nayak - University of Waterloo

A. K. Nayak
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Name
A. K. Nayak
Affiliation
University of Waterloo
City
Waterloo
Country
Canada

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Physics - Materials Science (18)
 
High Energy Physics - Phenomenology (7)
 
Quantum Physics (6)
 
High Energy Physics - Experiment (6)
 
Physics - Strongly Correlated Electrons (5)
 
Physics - Mesoscopic Systems and Quantum Hall Effect (3)
 
Instrumentation and Methods for Astrophysics (3)
 
Mathematics - Optimization and Control (2)
 
Mathematical Physics (1)
 
High Energy Physics - Theory (1)
 
Computer Science - Data Structures and Algorithms (1)
 
Earth and Planetary Astrophysics (1)
 
Computer Science - Computational Complexity (1)
 
Mathematics - Mathematical Physics (1)
 
Physics - Biological Physics (1)
 
Computer Science - Artificial Intelligence (1)
 
High Energy Astrophysical Phenomena (1)
 
Computer Science - Logic in Computer Science (1)
 
Quantitative Biology - Tissues and Organs (1)
 
Physics - Disordered Systems and Neural Networks (1)
 
Computer Science - Networking and Internet Architecture (1)
 
Physics - Instrumentation and Detectors (1)

Publications Authored By A. K. Nayak

In this communication we present a detailed study of the effect of chemical disorder on the optical response of Ni$_{1-x}$Pt$_x$ (0.1$\leq$ x $\leq$0.75) and Ni$_{3(1-x)/3}$Pt$_x$ (0. Read More

The higher the energy of a particle is above equilibrium the faster it relaxes due to the growing phase-space of available electronic states it can interact with. In the relaxation process phase coherence is lost, thus limiting high energy quantum control and manipulation. In one-dimensional systems high relaxation rates are expected to destabilize electronic quasiparticles. Read More

Almost-global orientation trajectory tracking for a rigid body with external actuation has been well studied in the literature, and in the geometric setting as well. The tracking control law relies on the fact that a rigid body is a simple mechanical system (SMS) on the $3-$dimensional group of special orthogonal matrices. However, the problem of designing feedback control laws for tracking using internal actuation mechanisms, like rotors or control moment gyros, has received lesser attention from a geometric point of view. Read More

Skyrmions, topologically stable spin textures, are of great interest for new generations of spintronic devices. In general, the stabilization of skyrmions has been achieved in systems with broken inversion symmetry, where the asymmetric Dzyaloshinskii-Moriya interaction (DMI) modifies the uniform magnetic state to a swirling state. Depending on the crystal symmetries, two distinct types of skyrmions, Bloch and N\'eel types, have been observed experimentally. Read More

In this work the conducting properties of graphene lattice with a particular concentration of defect (5\% and 10\%) has been studied. The real space block recursion method introduced by Haydock et al. has been used in presence of the random distribution of defects in graphene. Read More

We present a real-space formulation for calculating the electronic structure and optical conductivity of such random alloys based on the Kubo-Greenwood formalism interfaced with the augmented space recursion (ASR) [A. Mookerjee, J. Phys. Read More

The Slater-Pauling rule states that L21 Heusler compounds with 24 valence electrons do never exhibit a total spin magnetic moment. In case of strongly localized magnetic moments at one of the atoms (here Mn) they will exhibit a fully compensated half-metallic ferrimagnetic state instead, in particular, when symmetry does not allow for antiferromagnetic order. With aid of magnetic and anomalous Hall effect measurements it is experimentally demonstrated that Mn1. Read More

Heusler compounds are a large family of binary, ternary and quaternary compounds that exhibit a wide range of properties of both fundamental and potential technological interest. The extensive tunability of the Heusler compounds through chemical substitutions and structural motifs makes the family especially interesting. In this article we highlight recent major developments in the field of Heusler compounds and put these in the historical context. Read More

We show how two recently developed quantum information theoretic tools can be applied to obtain lower bounds on quantum information complexity. We also develop new tools with potential for broader applicability, and use them to establish a lower bound on the quantum information complexity for the Augmented Index function on an easy distribution. This approach allows us to handle superpositions rather than distributions over inputs, the main technical challenge faced previously. Read More

We illustrate some new and novel effects which arise in decay and scattering experiments within the framework of Very Special Relativity (VSR) using the charged pion decay process as an example. It is assumed that there is a small violation of Lorentz invariance and the true symmetry group of nature is a subgroup called SIM(2). This symmetry group postulates the existence of a fundamental or preferred direction in space-time. Read More

We employ the conditional version of sandwiched Tsallis relative entropy to determine 1:N-1 separability range in the noisy one-parameter families of pseudopure and Werner-like N-qubit W, GHZ states. The range of the noisy parameter, for which the conditional sandwiched Tsallis relative entropy is positive, reveals perfect agreement with the necessary and sufficient criteria for the separability in the 1:N-1 partition of these one parameter noisy states. Read More

We consider scenarios in which the annihilation of self-conjugate spin-1 dark matter to a Standard Model fermion-antifermion final state is chirality suppressed, but where this suppression can be lifted by the emission of an additional photon via internal bremsstrahlung. We find that this scenario can only arise if the initial dark matter state is polarized, which can occur in the context of self-interacting dark matter. In particular, this is possible if the dark matter pair forms a bound state that decays to its ground state before the constituents annihilate. Read More

In recent years, antiferromagnetic spintronics has received much attention since ideal antiferromagnets do not produce stray fields and are much more stable to external magnetic fields compared to materials with net magnetization. Akin to antiferromagnets, compensated ferrimagnets have zero net magnetization but have the potential for large spin-polarization and strong out of plane magnetic anisotropy, and, hence, are ideal candidates for high density memory applications. Here, we demonstrate that a fully compensated magnetic state with a tunable magnetic anisotropy is realized in Mn-Pt-Ga based tetragonal Heusler thin films. Read More

Topological materials ranging from topological insulators to Weyl and Dirac semimetals form one of the most exciting current fields in condensed matter research. Many half-Heusler compounds have been theoretically predicted to be topological semimetals. Of these many are also superconductors, are magnetic or show Kondo behavior. Read More

Belief revision has been studied mainly with respect to background logics that are monotonic in character. In this paper we study belief revision when the underlying logic is non-monotonic instead--an inherently interesting problem that is under explored. In particular, we will focus on the revision of a body of beliefs that is represented as a logic program under the answer set semantics, while the new information is also similarly represented as a logic program. Read More

The decay mode $B\to K^*\ell^+\ell^-$ is one of the most promising modes to probe physics beyond the standard model (SM), since the angular distribution of the decay products enable measurement of several constraining observables. LHCb has recently measured these observables using $3fb^{-1}$ of data as a binned function of $q^2$, the dilepton invariant mass squared. We find that LHCb data implies evidence for right-handed currents, which are absent in the SM. Read More

We present systematic numerical studies of electrical-wave propagation in two-dimensional (2D) and three-dimensional (3D) mathematical models, for human, ventricular tissue with myocyte cells that are attached (a) regularly and (b) randomly to distributed fibroblasts. In both these cases we show that there is a parameter regime in which single rotating spiral- and scroll-wave states (RS) retain their integrity and do not evolve to a state ST that displays spatiotemporal chaos and turbulence. However, in another range of parameters, we observe a transition from ST to RS states in both 2D or 3D domains and for both cases (a) and (b). Read More

We report the effect of hydrostatic pressure on the magnetic and structural properties of the shape-memory Heusler alloy Ni50Mn35In15. Magnetization and x-ray diffraction experiments were performed at hydrostatic pressures up to 5 GPa using diamond anvil cells. Pressure stabilizes the martensitic phase, shifting the martensitic transition to higher temperatures and suppresses the ferromagnetic austenitic phase. Read More

It is well established that the anomalous Hall effect that a ferromagnet displays scales with its magnetization. Therefore, an antiferromagnet that has no net magnetization should exhibit no anomalous Hall effect. Here we show that the non-collinear triangular antiferromagnet Mn3Ge exhibits a large anomalous Hall effect comparable to that of ferromagnetic metals; the magnitude of the anomalous conductivity is 500 per ohm per cm at 2 K and 50 per ohm per cm at room temperature. Read More

Many TDMA- and CSMA-based protocols try to obtain fair channel access and to increase channel utilization. It is still challenging and crucial in Wireless Sensor Networks (WSNs), especially when the time synchronization cannot be well guaranteed and consumes much extra energy. This paper presents a localized and ondemand scheme ADC to adaptively adjust duty cycle based on quorum systems. Read More

In this article, we propose a control law for almost-global asymptotic tracking (AGAT) of a smooth reference trajectory for a fully actuated simple mechanical system (SMS) evolving on a Riemannian manifold which can be embedded in a Euclidean space. The existing results on tracking for an SMS are either local, or almost-global, only in the case the manifold is a Lie group. In the latter case, the notion of a configuration error is naturally defined by the group operation and facilitates a global analysis. Read More

In this communication we present together four distinct techniques for the study of electronic structure of solids : the tight-binding linear muffin-tin orbitals (TB-LMTO), the real space and augmented space recursions and the modified exchange-correlation. Using this we investigate the effect of random vacancies on the electronic properties of the carbon hexagonal allotrope, graphene, and the non-hexagonal allotrope, planar T graphene. We have inserted random vacancies at different concentrations, to simulate disorder in pristine graphene and planar T graphene sheets. Read More

Due to the drastically different intralayer versus interlayer bonding strengths, the mechanical, thermal, and electrical properties of two-dimensional (2D) materials are highly anisotropic between the in-plane and out-of-plane directions. The structural anisotropy may also play a role in chemical reactions, such as oxidation, reduction, and etching. Here, the composition, structure, and electrical properties of mechanically exfoliated WSe2 nano- sheets on SiO2/Si substrates were studied as a function of the extent of thermal oxidation. Read More

The discovery of materials with improved functionality can be accelerated by rational material design. Heusler compounds with tunable magnetic sublattices allow to implement this concept to achieve novel magnetic properties. Here, we have designed a family of Heusler alloys with a compensated ferrimagnetic state. Read More

We have initiated the High-Altitude Ballooning programme at Indian Institute of Astrophysics, Bangalore, in the year 2011 with the primary purpose of developing and flying low-cost scientific payloads on a balloon-borne platform. The main aim is the observations of extended nearby objects (e.g. Read More

The lattice dynamics in the polycrystalline shape-memory Heusler alloy Ni$_{50}$Mn$_{35}$In$_{15}$ has been studied by means of resonant ultrasound spectroscopy (RUS). RUS spectra were collected in a frequency range $100-1200$ kHz between 10 and 350 K. Ni$_{50}$Mn$_{35}$In$_{15}$ exhibits a ferromagnetic transition at 313 K in the austenite and a martensitic transition at 248 K accompanied by a change of the magnetic state. Read More

The results of the searches for a Higgs boson decaying to down-type fermions are presented using the proton-proton collision data collected by the ATLAS and CMS experiments at the LHC, at a centre-of-mass energy of 7 and 8 TeV. The results obtained with the available data provides a strong evidence for a Higgs boson coupling to fermions. Results are also presented for a Higgs boson production in association with a pair of top quarks. Read More

2015May
Authors: W. Adam, T. Bergauer, M. Dragicevic, M. Friedl, R. Fruehwirth, M. Hoch, J. Hrubec, M. Krammer, W. Treberspurg, W. Waltenberger, S. Alderweireldt, W. Beaumont, X. Janssen, S. Luyckx, P. Van Mechelen, N. Van Remortel, A. Van Spilbeeck, P. Barria, C. Caillol, B. Clerbaux, G. De Lentdecker, D. Dobur, L. Favart, A. Grebenyuk, Th. Lenzi, A. Léonard, Th. Maerschalk, A. Mohammadi, L. Perniè, A. Randle-Conde, T. Reis, T. Seva, L. Thomas, C. Vander Velde, P. Vanlaer, J. Wang, F. Zenoni, S. Abu Zeid, F. Blekman, I. De Bruyn, J. D'Hondt, N. Daci, K. Deroover, N. Heracleous, J. Keaveney, S. Lowette, L. Moreels, A. Olbrechts, Q. Python, S. Tavernier, P. Van Mulders, G. Van Onsem, I. Van Parijs, D. A. Strom, A. Caudron, L. Ceard, B. De Callatay, C. Delaere, T. Du Pree, L. Forthomme, A. Giammanco, J. Hollar, P. Jez, D. Michotte, C. Nuttens, L. Perrini, D. Pagano, L. Quertenmont, M. Selvaggi, M. Vidal Marono, N. Beliy, T. Caebergs, E. Daubie, G. H. Hammad, J. Härkönen, T. Lampén, P. -R. Luukka, T. Mäenpää, T. Peltola, E. Tuominen, E. Tuovinen, P. Eerola, T. Tuuva, G. Beaulieu, G. Boudoul, C. Combaret, D. Contardo, G. Gallbit, N. Lumb, H. Mathez, L. Mirabito, S. Perries, D. Sabes, M. Vander Donckt, P. Verdier, S. Viret, Y. Zoccarato, J. -L. Agram, E. Conte, J. -Ch. Fontaine, J. Andrea, D. Bloch, C. Bonnin, J. -M. Brom, E. Chabert, L. Charles, Ch. Goetzmann, L. Gross, J. Hosselet, C. Mathieu, M. Richer, K. Skovpen, C. Autermann, M. Edelhoff, H. Esser, L. Feld, W. Karpinski, K. Klein, M. Lipinski, A. Ostapchuk, G. Pierschel, M. Preuten, F. Raupach, J. Sammet, S. Schael, G. Schwering, B. Wittmer, M. Wlochal, V. Zhukov, C. Pistone, G. Fluegge, A. Kuensken, M. Geisler, O. Pooth, A. Stahl, N. Bartosik, J. Behr, A. Burgmeier, L. Calligaris, G. Dolinska, G. Eckerlin, D. Eckstein, T. Eichhorn, G. Fluke, J. Garay Garcia, A. Gizhko, K. Hansen, A. Harb, J. Hauk, A. Kalogeropoulos, C. Kleinwort, I. Korol, W. Lange, W. Lohmann, R. Mankel, H. Maser, G. Mittag, C. Muhl, A. Mussgiller, A. Nayak, E. Ntomari, H. Perrey, D. Pitzl, M. Schroeder, C. Seitz, S. Spannagel, A. Zuber, H. Biskop, V. Blobel, P. Buhmann, M. Centis-Vignali, A. -R. Draeger, J. Erfle, E. Garutti, J. Haller, M. Hoffmann, A. Junkes, T. Lapsien, S. Mättig, M. Matysek, A. Perieanu, J. Poehlsen, T. Poehlsen, Ch. Scharf, P. Schleper, A. Schmidt, V. Sola, G. Steinbrück, J. Wellhausen, T. Barvich, Ch. Barth, F. Boegelspacher, W. De Boer, E. Butz, M. Casele, F. Colombo, A. Dierlamm, R. Eber, B. Freund, F. Hartmann, Th. Hauth, S. Heindl, K. -H. Hoffmann, U. Husemann, A. Kornmeyer, S. Mallows, Th. Muller, A. Nuernberg, M. Printz, H. J. Simonis, P. Steck, M. Weber, Th. Weiler, A. Bhardwaj, A. Kumar, A. Kumar, K. Ranjan, H. Bakhshiansohl, H. Behnamian, M. Khakzad, M. Naseri, P. Cariola, G. De Robertis, L. Fiore, M. Franco, F. Loddo, G. Sala, L. Silvestris, D. Creanza, M. De Palma, G. Maggi, S. My, G. Selvaggi, S. Albergo, G. Cappello, M. Chiorboli, S. Costa, F. Giordano, A. Di Mattia, R. Potenza, M. A. Saizu, A. Tricomi, C. Tuvè, G. Barbagli, M. Brianzi, R. Ciaranfi, C. Civinini, E. Gallo, M. Meschini, S. Paoletti, G. Sguazzoni, V. Ciulli, R. D'Alessandro, S. Gonzi, V. Gori, E. Focardi, P. Lenzi, E. Scarlini, A. Tropiano, L. Viliani, F. Ferro, E. Robutti, M. Lo Vetere, S. Gennai, S. Malvezzi, D. Menasce, L. Moroni, D. Pedrini, M. Dinardo, S. Fiorendi, R. A. Manzoni, P. Azzi, N. Bacchetta, D. Bisello, M. Dall'Osso, T. Dorigo, P. Giubilato, N. Pozzobon, M. Tosi, A. Zucchetta, F. De Canio, L. Gaioni, M. Manghisoni, B. Nodari, V. Re, G. Traversi, D. Comotti, L. Ratti, G. M. Bilei, L. Bissi, B. Checcucci, D. Magalotti, M. Menichelli, A. Saha, L. Servoli, L. Storchi, M. Biasini, E. Conti, D. Ciangottini, L. Fanò, P. Lariccia, G. Mantovani, D. Passeri, P. Placidi, M. Salvatore, A. Santocchia, L. A. Solestizi, A. Spiezia, K. Androsov, P. Azzurri, S. Arezzini, G. Bagliesi, A. Basti, T. Boccali, F. Bosi, R. Castaldi, A. Ciampa, M. A. Cioccid, R. Dell'Orso, G. Fedi, A. Giassi, M. T. Grippod, T. Lomtadze, G. Magazzu, E. Mazzoni, M. Minuti, A. Moggi, C. S. Moond, F. Morsani, F. Palla, F. Palmonari, F. Raffaelli, A. Savoy-Navarro, A. T. Serban, P. Spagnolo, R. Tenchini, A. Venturi, P. G. Verdini, L. Martini, A. Messineo, A. Rizzi, G. Tonelli, F. Calzolari, S. Donato, F. Fiori, F. Ligabue, C. Vernieri, N. Demaria, A. Rivetti, R. Bellan, S. Casasso, M. Costa, R. Covarelli, E. Migliore, E. Monteil, M. Musich, L. Pacher, F. Ravera, A. Romero, A. Solano, P. Trapani, R. Jaramillo Echeverria, M. Fernandez, G. Gomez, D. Moya, F. J. Gonzalez Sanchez, F. J. Munoz Sanchez, I. Vila, A. L. Virto, D. Abbaneo, I. Ahmed, E. Albert, G. Auzinger, G. Berruti, G. Bianchi, G. Blanchot, H. Breuker, D. Ceresa, J. Christiansen, K. Cichy, J. Daguin, M. D'Alfonso, A. D'Auria, S. Detraz, S. De Visscher, D. Deyrail, F. Faccio, D. Felici, N. Frank, K. Gill, D. Giordano, P. Harris, A. Honma, J. Kaplon, A. Kornmayer, L. Kottelat, M. Kovacs, M. Mannelli, A. Marchioro, S. Marconi, S. Martina, S. Mersi, S. Michelis, M. Moll, A. Onnela, T. Pakulski, S. Pavis, A. Peisert, J. -F. Pernot, P. Petagna, G. Petrucciani, H. Postema, P. Rose, M. Rzonca, M. Stoye, P. Tropea, J. Troska, A. Tsirou, F. Vasey, P. Vichoudis, B. Verlaat, L. Zwalinski, F. Bachmair, R. Becker, L. Bäni, D. di Calafiori, B. Casal, L. Djambazov, M. Donega, M. Dünser, P. Eller, C. Grab, D. Hits, U. Horisberger, J. Hoss, G. Kasieczka, W. Lustermann, B. Mangano, M. Marionneau, P. Martinez Ruiz del Arbol, M. Masciovecchio, L. Perrozzi, U. Roeser, M. Rossini, A. Starodumov, M. Takahashi, R. Wallny, C. Amsler, K. Bösiger, L. Caminada, F. Canelli, V. Chiochia, A. de Cosa, C. Galloni, T. Hreus, B. Kilminster, C. Lange, R. Maier, J. Ngadiuba, D. Pinna, P. Robmann, S. Taroni, Y. Yang, W. Bertl, K. Deiters, W. Erdmann, R. Horisberger, H. -C. Kaestli, D. Kotlinski, U. Langenegger, B. Meier, T. Rohe, S. Streuli, P. -H. Chen, C. Dietz, U. Grundler, W. -S. Hou, R. -S. Lu, M. Moya, R. Wilken, D. Cussans, H. Flacher, J. Goldstein, M. Grimes, J. Jacob, S. Seif El Nasr-Storey, J. Cole, P. Hobson, D. Leggat, I. D. Reid, L. Teodorescu, R. Bainbridge, P. Dauncey, J. Fulcher, G. Hall, A. -M. Magnan, M. Pesaresi, D. M. Raymond, K. Uchida, J. A. Coughlan, K. Harder, J. Ilic, I. R. Tomalin, A. Garabedian, U. Heintz, M. Narain, J. Nelson, S. Sagir, T. Speer, J. Swanson, D. Tersegno, J. Watson-Daniels, M. Chertok, J. Conway, R. Conway, C. Flores, R. Lander, D. Pellett, F. Ricci-Tam, M. Squires, J. Thomson, R. Yohay, K. Burt, J. Ellison, G. Hanson, M. Malberti, M. Olmedo, G. Cerati, V. Sharma, A. Vartak, A. Yagil, G. Zevi Della Porta, V. Dutta, L. Gouskos, J. Incandela, S. Kyre, N. McColl, S. Mullin, D. White, J. P. Cumalat, W. T. Ford, A. Gaz, M. Krohn, K. Stenson, S. R. Wagner, B. Baldin, G. Bolla, K. Burkett, J. Butler, H. Cheung, J. Chramowicz, D. Christian, W. E. Cooper, G. Deptuch, G. Derylo, C. Gingu, S. Gruenendahl, S. Hasegawa, J. Hoff, J. Howell, M. Hrycyk, S. Jindariani, M. Johnson, A. Jung, U. Joshi, F. Kahlid, C. M. Lei, R. Lipton, T. Liu, S. Los, M. Matulik, P. Merkel, S. Nahn, A. Prosser, R. Rivera, A. Shenai, L. Spiegel, N. Tran, L. Uplegger, E. Voirin, H. Yin, M. R. Adams, D. R. Berry, A. Evdokimov, O. Evdokimov, C. E. Gerber, D. J. Hofman, B. K. Kapustka, C. O'Brien, D. I. Sandoval Gonzalez, H. Trauger, P. Turner, N. Parashar, J. Stupak, D. Bortoletto, M. Bubna, N. Hinton, M. Jones, D. H. Miller, X. Shi, P. Tan, P. Baringer, A. Bean, G. Benelli, J. Gray, D. Majumder, D. Noonan, S. Sanders, R. Stringer, A. Ivanov, M. Makouski, N. Skhirtladze, R. Taylor, I. Anderson, D. Fehling, A. Gritsan, P. Maksimovic, C. Martin, K. Nash, M. Osherson, M. Swartz, M. Xiao, J. G. Acosta, L. M. Cremaldi, S. Oliveros, L. Perera, D. Summers, K. Bloom, S. Bose, D. R. Claes, A. Dominguez, C. Fangmeier, R. Gonzalez Suarez, F. Meier, J. Monroy, K. Hahn, S. Sevova, K. Sung, M. Trovato, E. Bartz, D. Duggan, E. Halkiadakis, A. Lath, M. Park, S. Schnetzer, R. Stone, M. Walker, S. Malik, H. Mendez, J. E. Ramirez Vargas, M. Alyari, J. Dolen, J. George, A. Godshalk, I. Iashvili, J. Kaisen, A. Kharchilava, A. Kumar, S. Rappoccio, J. Alexander, J. Chaves, J. Chu, S. Dittmer, G. Kaufman, N. Mirman, A. Ryd, E. Salvati, L. Skinnari, J. Thom, J. Thompson, J. Tucker, L. Winstrom, B. Akgün, K. M. Ecklund, T. Nussbaum, J. Zabel, B. Betchart, R. Covarelli, R. Demina, O. Hindrichs, G. Petrillo, R. Eusebi, I. Osipenkov, A. Perloff, K. A. Ulmer, A. G. Delannoy, P. D'Angelo, W. Johns

The degradation of signal in silicon sensors is studied under conditions expected at the CERN High-Luminosity LHC. 200 $\mu$m thick n-type silicon sensors are irradiated with protons of different energies to fluences of up to $3 \cdot 10^{15}$ neq/cm$^2$. Pulsed red laser light with a wavelength of 672 nm is used to generate electron-hole pairs in the sensors. Read More

We propose a generalization of the Chern-Simon (CS) Lagrangian which is invariant under the SIM(2) transformations but not under the full Lorentz group. We study the effect of such a term on radiation propagating over cosmological distances. We find that the dominant effect of this term is to produce circular polarization as radiation propagates through space. Read More

We focus on a family of quantum coin-flipping protocols based on bit-commitment. We discuss how the semidefinite programming formulations of cheating strategies can be reduced to optimizing a linear combination of fidelity functions over a polytope. These turn out to be much simpler semidefinite programs which can be modelled using second-order cone programming problems. Read More

We review how Elko arise as an extension of complex valued four-component Majorana spinors. This is followed by a discussion that constrains certain elements of phase freedom. A proof is reviewed that unambiguously establishes that Elko, and for that matter the indicated Majorana spinors, cannot satisfy Dirac equation. Read More

Topological insulators are new kind of Dirac materials that possess bulk insulating and surface conducting behavior. They are basically known for their unique electronic properties at the surface. Here we present the magneto-transport properties of our high quality single crystalline Y(Lu)PtBi Heusler topological insulators, which belong to a group of noncentrosymmetric superconductor with Tc = 0:8 K. Read More

We have studied the magnetocaloric effect (MCE) in the shape-memory Heusler alloy Ni$_{50}$Mn$_{35}$In$_{15}$ by direct measurements in pulsed magnetic fields up to 6 and 20 T. The results in 6 T are compared with data obtained from heat-capacity experiments. We find a saturation of the inverse MCE, related to the first-order martensitic transition, with a maximum adiabatic temperature change of $\Delta T_{ad} = -7$ K at 250 K and a conventional field-dependent MCE near the second-order ferromagnetic transition in the austenitic phase. Read More

We have developed a lightweight low-cost attitude sensor, based on a Raspberry Pi, built with readily available commercial components. It can be used in experiments where weight and power are constrained, such as in high- altitude lightweight balloon flights. This attitude sensor will be used as a major building block in a closed-loop control system with driver motors to stabilize and point cameras and telescopes for astronomical observations from a balloon-borne payload. Read More

2014Nov
Authors: The CMS, LHCb Collaborations, :, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, M. Friedl, R. Frühwirth, V. M. Ghete, C. Hartl, N. Hörmann, J. Hrubec, M. Jeitler, W. Kiesenhofer, V. Knünz, M. Krammer, I. Krätschmer, D. Liko, I. Mikulec, D. Rabady, B. Rahbaran, H. Rohringer, R. Schöfbeck, J. Strauss, W. Treberer-Treberspurg, W. Waltenberger, C. -E. Wulz, V. Mossolov, N. Shumeiko, J. Suarez Gonzalez, S. Alderweireldt, S. Bansal, T. Cornelis, E. A. De Wolf, X. Janssen, A. Knutsson, J. Lauwers, S. Luyckx, S. Ochesanu, R. Rougny, M. Van De Klundert, H. Van Haevermaet, P. Van Mechelen, N. Van Remortel, A. Van Spilbeeck, F. Blekman, S. Blyweert, J. D'Hondt, N. Daci, N. Heracleous, J. Keaveney, S. Lowette, M. Maes, A. Olbrechts, Q. Python, D. Strom, S. Tavernier, W. Van Doninck, P. Van Mulders, G. P. Van Onsem, I. Villella, C. Caillol, B. Clerbaux, G. De Lentdecker, D. Dobur, L. Favart, A. P. R. Gay, A. Grebenyuk, A. Léonard, A. Mohammadi, L. Perniè, A. Randle-conde, T. Reis, T. Seva, L. Thomas, C. Vander Velde, P. Vanlaer, J. Wang, F. Zenoni, V. Adler, K. Beernaert, L. Benucci, A. Cimmino, S. Costantini, S. Crucy, S. Dildick, A. Fagot, G. Garcia, J. Mccartin, A. A. Ocampo Rios, D. Ryckbosch, S. Salva Diblen, M. Sigamani, N. Strobbe, F. Thyssen, M. Tytgat, E. Yazgan, N. Zaganidis, S. Basegmez, C. Beluffi, G. Bruno, R. Castello, A. Caudron, L. Ceard, G. G. Da Silveira, C. Delaere, T. du Pree, D. Favart, L. Forthomme, A. Giammanco, J. Hollar, A. Jafari, P. Jez, M. Komm, V. Lemaitre, C. Nuttens, D. Pagano, L. Perrini, A. Pin, K. Piotrzkowski, A. Popov, L. Quertenmont, M. Selvaggi, M. Vidal Marono, J. M. Vizan Garcia, N. Beliy, T. Caebergs, E. Daubie, G. H. Hammad, W. L. Aldá Júnior, G. A. Alves, L. Brito, M. Correa Martins Junior, T. Dos Reis Martins, C. Mora Herrera, M. E. Pol, P. Rebello Teles, W. Carvalho, J. Chinellato, A. Custódio, E. M. Da Costa, D. De Jesus Damiao, C. De Oliveira Martins, S. Fonseca De Souza, H. Malbouisson, D. Matos Figueiredo, L. Mundim, H. Nogima, W. L. Prado Da Silva, J. Santaolalla, A. Santoro, A. Sznajder, E. J. Tonelli Manganote, A. Vilela Pereira, C. A. Bernardes, S. Dogra, T. R. Fernandez Perez Tomei, E. M. Gregores, P. G. Mercadante, S. F. Novaes, Sandra S. Padula, A. Aleksandrov, V. Genchev, R. Hadjiiska, P. Iaydjiev, A. Marinov, S. Piperov, M. Rodozov, G. Sultanov, M. Vutova, A. Dimitrov, I. Glushkov, L. Litov, B. Pavlov, P. Petkov, J. G. Bian, G. M. Chen, H. S. Chen, M. Chen, T. Cheng, R. Du, C. H. Jiang, R. Plestina, F. Romeo, J. Tao, Z. Wang, C. Asawatangtrakuldee, Y. Ban, Q. Li, S. Liu, Y. Mao, S. J. Qian, D. Wang, Z. Xu, W. Zou, C. Avila, A. Cabrera, L. F. Chaparro Sierra, C. Florez, J. P. Gomez, B. Gomez Moreno, J. C. Sanabria, N. Godinovic, D. Lelas, D. Polic, I. Puljak, Z. Antunovic, M. Kovac, V. Brigljevic, K. Kadija, J. Luetic, D. Mekterovic, L. Sudic, A. Attikis, G. Mavromanolakis, J. Mousa, C. Nicolaou, F. Ptochos, P. A. Razis, M. Bodlak, M. Finger, M. Finger Jr., Y. Assran, A. Ellithi Kamel, M. A. Mahmoud, A. Radi, M. Kadastik, M. Murumaa, M. Raidal, A. Tiko, P. Eerola, G. Fedi, M. Voutilainen, J. Härkönen, V. Karimäki, R. Kinnunen, M. J. Kortelainen, T. Lampén, K. Lassila-Perini, S. Lehti, T. Lindén, P. Luukka, T. Mäenpää, T. Peltola, E. Tuominen, J. Tuominiemi, E. Tuovinen, L. Wendland, J. Talvitie, T. Tuuva, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, B. Fabbro, J. L. Faure, C. Favaro, F. Ferri, S. Ganjour, A. Givernaud, P. Gras, G. Hamel de Monchenault, P. Jarry, E. Locci, J. Malcles, J. Rander, A. Rosowsky, M. Titov, S. Baffioni, F. Beaudette, P. Busson, C. Charlot, T. Dahms, M. Dalchenko, L. Dobrzynski, N. Filipovic, A. Florent, R. Granier de Cassagnac, L. Mastrolorenzo, P. Miné, C. Mironov, I. N. Naranjo, M. Nguyen, C. Ochando, G. Ortona, P. Paganini, S. Regnard, R. Salerno, J. B. Sauvan, Y. Sirois, C. Veelken, Y. Yilmaz, A. Zabi, J. -L. Agram, J. Andrea, A. Aubin, D. Bloch, J. -M. Brom, E. C. Chabert, C. Collard, E. Conte, J. -C. Fontaine, D. Gelé, U. Goerlach, C. Goetzmann, A. -C. Le Bihan, K. Skovpen, P. Van Hove, S. Gadrat, S. Beauceron, N. Beaupere, G. Boudoul, E. Bouvier, S. Brochet, C. A. Carrillo Montoya, J. Chasserat, R. Chierici, D. Contardo, P. Depasse, H. El Mamouni, J. Fan, J. Fay, S. Gascon, M. Gouzevitch, B. Ille, T. Kurca, M. Lethuillier, L. Mirabito, S. Perries, J. D. Ruiz Alvarez, D. Sabes, L. Sgandurra, V. Sordini, M. Vander Donckt, P. Verdier, S. Viret, H. Xiao, Z. Tsamalaidze, C. Autermann, S. Beranek, M. Bontenackels, M. Edelhoff, L. Feld, A. Heister, O. Hindrichs, K. Klein, A. Ostapchuk, F. Raupach, J. Sammet, S. Schael, J. F. Schulte, H. Weber, B. Wittmer, V. Zhukov, M. Ata, M. Brodski, E. Dietz-Laursonn, D. Duchardt, M. Erdmann, R. Fischer, A. Güth, T. Hebbeker, C. Heidemann, K. Hoepfner, D. Klingebiel, S. Knutzen, P. Kreuzer, M. Merschmeyer, A. Meyer, P. Millet, M. Olschewski, K. Padeken, P. Papacz, H. Reithler, S. A. Schmitz, L. Sonnenschein, D. Teyssier, S. Thüer, M. Weber, V. Cherepanov, Y. Erdogan, G. Flügge, H. Geenen, M. Geisler, W. Haj Ahmad, F. Hoehle, B. Kargoll, T. Kress, Y. Kuessel, A. Künsken, J. Lingemann, A. Nowack, I. M. Nugent, O. Pooth, A. Stahl, M. Aldaya Martin, I. Asin, N. Bartosik, J. Behr, U. Behrens, A. J. Bell, A. Bethani, K. Borras, A. Burgmeier, A. Cakir, L. Calligaris, A. Campbell, S. Choudhury, F. Costanza, C. Diez Pardos, G. Dolinska, S. Dooling, T. Dorland, G. Eckerlin, D. Eckstein, T. Eichhorn, G. Flucke, J. Garay Garcia, A. Geiser, P. Gunnellini, J. Hauk, M. Hempel, H. Jung, A. Kalogeropoulos, M. Kasemann, P. Katsas, J. Kieseler, C. Kleinwort, I. Korol, D. Krücker, W. Lange, J. Leonard, K. Lipka, A. Lobanov, W. Lohmann, B. Lutz, R. Mankel, I. Marfin, I. -A. Melzer-Pellmann, A. B. Meyer, G. Mittag, J. Mnich, A. Mussgiller, S. Naumann-Emme, A. Nayak, E. Ntomari, H. Perrey, D. Pitzl, R. Placakyte, A. Raspereza, P. M. Ribeiro Cipriano, B. Roland, E. Ron, M. Ö. Sahin, J. Salfeld-Nebgen, P. Saxena, T. Schoerner-Sadenius, M. Schröder, C. Seitz, S. Spannagel, A. D. R. Vargas Trevino, R. Walsh, C. Wissing, V. Blobel, M. Centis Vignali, A. R. Draeger, J. Erfle, E. Garutti, K. Goebel, M. Görner, J. Haller, M. Hoffmann, R. S. Höing, A. Junkes, H. Kirschenmann, R. Klanner, R. Kogler, J. Lange, T. Lapsien, T. Lenz, I. Marchesini, J. Ott, T. Peiffer, A. Perieanu, N. Pietsch, J. Poehlsen, T. Poehlsen, D. Rathjens, C. Sander, H. Schettler, P. Schleper, E. Schlieckau, A. Schmidt, M. Seidel, V. Sola, H. Stadie, G. Steinbrück, D. Troendle, E. Usai, L. Vanelderen, A. Vanhoefer, C. Barth, C. Baus, J. Berger, C. Böser, E. Butz, T. Chwalek, W. De Boer, A. Descroix, A. Dierlamm, M. Feindt, F. Frensch, M. Giffels, A. Gilbert, F. Hartmann, T. Hauth, U. Husemann, I. Katkov, A. Kornmayer, E. Kuznetsova, P. Lobelle Pardo, M. U. Mozer, T. Müller, Th. Müller, A. Nürnberg, G. Quast, K. Rabbertz, S. Röcker, H. J. Simonis, F. M. Stober, R. Ulrich, J. Wagner-Kuhr, S. Wayand, T. Weiler, R. Wolf, G. Anagnostou, G. Daskalakis, T. Geralis, V. A. Giakoumopoulou, A. Kyriakis, D. Loukas, A. Markou, C. Markou, A. Psallidas, I. Topsis-Giotis, A. Agapitos, S. Kesisoglou, A. Panagiotou, N. Saoulidou, E. Stiliaris, X. Aslanoglou, I. Evangelou, G. Flouris, C. Foudas, P. Kokkas, N. Manthos, I. Papadopoulos, E. Paradas, J. Strologas, G. Bencze, C. Hajdu, P. Hidas, D. Horvath, F. Sikler, V. Veszpremi, G. Vesztergombi, A. J. Zsigmond, N. Beni, S. Czellar, J. Karancsi, J. Molnar, J. Palinkas, Z. Szillasi, A. Makovec, P. Raics, Z. L. Trocsanyi, B. Ujvari, N. Sahoo, S. K. Swain, S. B. Beri, V. Bhatnagar, R. Gupta, U. Bhawandeep, A. K. Kalsi, M. Kaur, R. Kumar, M. Mittal, N. Nishu, J. B. Singh, Ashok Kumar, Arun Kumar, S. Ahuja, A. Bhardwaj, B. C. Choudhary, A. Kumar, S. Malhotra, M. Naimuddin, K. Ranjan, V. Sharma, S. Banerjee, S. Bhattacharya, K. Chatterjee, S. Dutta, B. Gomber, Sa. Jain, Sh. Jain, R. Khurana, A. Modak, S. Mukherjee, D. Roy, S. Sarkar, M. Sharan, A. Abdulsalam, D. Dutta, S. Kailas, V. Kumar, A. K. Mohanty, L. M. Pant, P. Shukla, A. Topkar, T. Aziz, S. Banerjee, S. Bhowmik, R. M. Chatterjee, R. K. Dewanjee, S. Dugad, S. Ganguly, S. Ghosh, M. Guchait, A. Gurtu, G. Kole, S. Kumar, M. Maity, G. Majumder, K. Mazumdar, G. B. Mohanty, B. Parida, K. Sudhakar, N. Wickramage, H. Bakhshiansohi, H. Behnamian, S. M. Etesami, A. Fahim, R. Goldouzian, M. Khakzad, M. Mohammadi Najafabadi, M. Naseri, S. Paktinat Mehdiabadi, F. Rezaei Hosseinabadi, B. Safarzadeh, M. Zeinali, M. Felcini, M. Grunewald, M. Abbrescia, C. Calabria, S. S. Chhibra, A. Colaleo, D. Creanza, N. De Filippis, M. De Palma, L. Fiore, G. Iaselli, G. Maggi, M. Maggi, S. My, S. Nuzzo, A. Pompili, G. Pugliese, R. Radogna, G. Selvaggi, A. Sharma, L. Silvestris, R. Venditti, P. Verwilligen, G. Abbiendi, A. C. Benvenuti, D. Bonacorsi, S. Braibant-Giacomelli, L. Brigliadori, R. Campanini, P. Capiluppi, A. Castro, F. R. Cavallo, G. Codispoti, M. Cuffiani, G. M. Dallavalle, F. Fabbri, A. Fanfani, D. Fasanella, P. Giacomelli, C. Grandi, L. Guiducci, S. Marcellini, G. Masetti, A. Montanari, F. L. Navarria, A. Perrotta, F. Primavera, A. M. Rossi, T. Rovelli, G. P. Siroli, N. Tosi, R. Travaglini, S. Albergo, G. Cappello, M. Chiorboli, S. Costa, F. Giordano, R. Potenza, A. Tricomi, C. Tuve, G. Barbagli, V. Ciulli, C. Civinini, R. D'Alessandro, E. Focardi, E. Gallo, S. Gonzi, V. Gori, P. Lenzi, M. Meschini, S. Paoletti, G. Sguazzoni, A. Tropiano, L. Benussi, S. Bianco, F. Fabbri, D. Piccolo, R. Ferretti, F. Ferro, M. Lo Vetere, E. Robutti, S. Tosi, M. E. Dinardo, S. Fiorendi, S. Gennai, R. Gerosa, A. Ghezzi, P. Govoni, M. T. Lucchini, S. Malvezzi, R. A. Manzoni, A. Martelli, B. Marzocchi, D. Menasce, L. Moroni, M. Paganoni, D. Pedrini, S. Ragazzi, N. Redaelli, T. Tabarelli de Fatis, S. Buontempo, N. Cavallo, S. Di Guida, F. Fabozzi, A. O. M. Iorio, L. Lista, S. Meola, M. Merola, P. Paolucci, P. Azzi, N. Bacchetta, D. Bisello, A. Branca, R. Carlin, P. Checchia, M. Dall'Osso, T. Dorigo, U. Dosselli, M. Galanti, F. Gasparini, U. Gasparini, P. Giubilato, A. Gozzelino, K. Kanishchev, S. Lacaprara, M. Margoni, A. T. Meneguzzo, J. Pazzini, N. Pozzobon, P. Ronchese, F. Simonetto, E. Torassa, M. Tosi, P. Zotto, A. Zucchetta, G. Zumerle, M. Gabusi, S. P. Ratti, V. Re, C. Riccardi, P. Salvini, P. Vitulo, M. Biasini, G. M. Bilei, D. Ciangottini, L. Fanò, P. Lariccia, G. Mantovani, M. Menichelli, A. Saha, A. Santocchia, A. Spiezia, K. Androsov, P. Azzurri, G. Bagliesi, J. Bernardini, T. Boccali, G. Broccolo, R. Castaldi, M. A. Ciocci, R. Dell'Orso, S. Donato, F. Fiori, L. Foà, A. Giassi, M. T. Grippo, F. Ligabue, T. Lomtadze, L. Martini, A. Messineo, C. S. Moon, F. Palla, A. Rizzi, A. Savoy-Navarro, A. T. Serban, P. Spagnolo, P. Squillacioti, R. Tenchini, G. Tonelli, A. Venturi, P. G. Verdini, C. Vernieri, L. Barone, F. Cavallari, G. D'imperio, D. Del Re, M. Diemoz, C. Jorda, E. Longo, F. Margaroli, P. Meridiani, F. Micheli, S. Nourbakhsh, G. Organtini, R. Paramatti, S. Rahatlou, C. Rovelli, F. Santanastasio, L. Soffi, P. Traczyk, N. Amapane, R. Arcidiacono, S. Argiro, M. Arneodo, R. Bellan, C. Biino, N. Cartiglia, S. Casasso, M. Costa, A. Degano, N. Demaria, L. Finco, C. Mariotti, S. Maselli, E. Migliore, V. Monaco, M. Musich, M. M. Obertino, L. Pacher, N. Pastrone, M. Pelliccioni, G. L. Pinna Angioni, A. Potenza, A. Romero, M. Ruspa, R. Sacchi, A. Solano, A. Staiano, U. Tamponi, S. Belforte, V. Candelise, M. Casarsa, F. Cossutti, G. Della Ricca, B. Gobbo, C. La Licata, M. Marone, A. Schizzi, T. Umer, A. Zanetti, S. Chang, A. Kropivnitskaya, S. K. Nam, D. H. Kim, G. N. Kim, M. S. Kim, D. J. Kong, S. Lee, Y. D. Oh, H. Park, A. Sakharov, D. C. Son, T. J. Kim, J. Y. Kim, S. Song, S. Choi, D. Gyun, B. Hong, M. Jo, H. Kim, Y. Kim, B. Lee, K. S. Lee, S. K. Park, Y. Roh, H. D. Yoo, M. Choi, J. H. Kim, I. C. Park, G. Ryu, M. S. Ryu, Y. Choi, Y. K. Choi, J. Goh, D. Kim, E. Kwon, J. Lee, I. Yu, A. Juodagalvis, J. R. Komaragiri, M. A. B. Md Ali, E. Casimiro Linares, H. Castilla-Valdez, E. De La Cruz-Burelo, I. Heredia-de La Cruz, A. Hernandez-Almada, R. Lopez-Fernandez, A. Sanchez-Hernandez, S. Carrillo Moreno, F. Vazquez Valencia, I. Pedraza, H. A. Salazar Ibarguen, A. Morelos Pineda, D. Krofcheck, P. H. Butler, S. Reucroft, A. Ahmad, M. Ahmad, Q. Hassan, H. R. Hoorani, W. A. Khan, T. Khurshid, M. Shoaib, H. Bialkowska, M. Bluj, B. Boimska, T. Frueboes, M. Górski, M. Kazana, K. Nawrocki, K. Romanowska-Rybinska, M. Szleper, P. Zalewski, G. Brona, K. Bunkowski, M. Cwiok, W. Dominik, K. Doroba, A. Kalinowski, M. Konecki, J. Krolikowski, M. Misiura, M. Olszewski, W. Wolszczak, P. Bargassa, C. Beirão Da Cruz E Silva, P. Faccioli, P. G. Ferreira Parracho, M. Gallinaro, L. Lloret Iglesias, F. Nguyen, J. Rodrigues Antunes, J. Seixas, J. Varela, P. Vischia, S. Afanasiev, P. Bunin, M. Gavrilenko, I. Golutvin, I. Gorbunov, A. Kamenev, V. Karjavin, V. Konoplyanikov, A. Lanev, A. Malakhov, V. Matveev, P. Moisenz, V. Palichik, V. Perelygin, S. Shmatov, N. Skatchkov, V. Smirnov, A. Zarubin, V. Golovtsov, Y. Ivanov, V. Kim, P. Levchenko, V. Murzin, V. Oreshkin, I. Smirnov, V. Sulimov, L. Uvarov, S. Vavilov, A. Vorobyev, An. Vorobyev, Yu. Andreev, A. Dermenev, S. Gninenko, N. Golubev, M. Kirsanov, N. Krasnikov, A. Pashenkov, D. Tlisov, A. Toropin, V. Epshteyn, V. Gavrilov, N. Lychkovskaya, V. Popov, I. Pozdnyakov, G. Safronov, S. Semenov, A. Spiridonov, V. Stolin, E. Vlasov, A. Zhokin, V. Andreev, M. Azarkin, I. Dremin, M. Kirakosyan, A. Leonidov, G. Mesyats, S. V. Rusakov, A. Vinogradov, A. Belyaev, E. Boos, M. Dubinin, L. Dudko, A. Ershov, A. Gribushin, V. Klyukhin, O. Kodolova, I. Lokhtin, S. Obraztsov, S. Petrushanko, V. Savrin, A. Snigirev, I. Azhgirey, I. Bayshev, S. Bitioukov, V. Kachanov, A. Kalinin, D. Konstantinov, V. Krychkine, V. Petrov, R. Ryutin, A. Sobol, L. Tourtchanovitch, S. Troshin, N. Tyurin, A. Uzunian, A. Volkov, P. Adzic, M. Ekmedzic, J. Milosevic, V. Rekovic, J. Alcaraz Maestre, C. Battilana, E. Calvo, M. Cerrada, M. Chamizo Llatas, N. Colino, B. De La Cruz, A. Delgado Peris, D. Domínguez Vázquez, A. Escalante Del Valle, C. Fernandez Bedoya, J. P. Fernández Ramos, J. Flix, M. C. Fouz, P. Garcia-Abia, O. Gonzalez Lopez, S. Goy Lopez, J. M. Hernandez, M. I. Josa, E. Navarro De Martino, A. Pérez-Calero Yzquierdo, J. Puerta Pelayo, A. Quintario Olmeda, I. Redondo, L. Romero, M. S. Soares, C. Albajar, J. F. de Trocóniz, M. Missiroli, D. Moran, H. Brun, J. Cuevas, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Caballero, J. A. Brochero Cifuentes, I. J. Cabrillo, A. Calderon, J. Duarte Campderros, M. Fernandez, G. Gomez, A. Graziano, A. Lopez Virto, J. Marco, R. Marco, C. Martinez Rivero, F. Matorras, F. J. Munoz Sanchez, J. Piedra Gomez, T. Rodrigo, A. Y. Rodríguez-Marrero, A. Ruiz-Jimeno, L. Scodellaro, I. Vila, R. Vilar Cortabitarte, D. Abbaneo, E. Auffray, G. Auzinger, M. Bachtis, P. Baillon, A. H. Ball, D. Barney, A. Benaglia, J. Bendavid, L. Benhabib, J. F. 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Badalov, M. Calvo Gomez, L. Garrido, D. Gascon, R. Graciani Diaz, E. Graugés, C. Marin Benito, E. Picatoste Olloqui, V. Rives Molina, H. Ruiz, X. Vilasis-Cardona, B. Adeva, P. Alvarez Cartelle, A. Dosil Suárez, V. Fernandez Albor, A. Gallas Torreira, J. García Pardiñas, J. A. Hernando Morata, M. Plo Casasus, A. Romero Vidal, J. J. Saborido Silva, B. Sanmartin Sedes, C. Santamarina Rios, P. Vazquez Regueiro, C. Vázquez Sierra, M. Vieites Diaz, F. Alessio, F. Archilli, C. Barschel, S. Benson, J. Buytaert, D. Campora Perez, L. Castillo Garcia, M. Cattaneo, Ph. Charpentier, X. Cid Vidal, M. Clemencic, J. Closier, V. Coco, P. Collins, G. Corti, B. Couturier, C. D'Ambrosio, F. Dettori, A. Di Canto, H. Dijkstra, P. Durante, M. Ferro-Luzzi, R. Forty, M. Frank, C. Frei, C. Gaspar, V. V. Gligorov, L. A. Granado Cardoso, T. Gys, C. Haen, J. He, T. Head, E. van Herwijnen, R. Jacobsson, D. Johnson, C. Joram, B. Jost, M. Karacson, T. M. Karbach, D. Lacarrere, B. Langhans, R. Lindner, C. Linn, S. Lohn, A. Mapelli, R. Matev, Z. Mathe, S. Neubert, N. Neufeld, A. Otto, J. Panman, M. Pepe Altarelli, N. Rauschmayr, M. Rihl, S. Roiser, T. Ruf, H. Schindler, B. Schmidt, A. Schopper, R. Schwemmer, S. Sridharan, F. Stagni, V. K. Subbiah, F. Teubert, E. Thomas, D. Tonelli, A. Trisovic, M. Ubeda Garcia, J. Wicht, K. Wyllie, V. Battista, A. Bay, F. Blanc, M. Dorigo, F. Dupertuis, C. Fitzpatrick, S. Gianì, G. Haefeli, P. Jaton, C. Khurewathanakul, I. Komarov, V. N. La Thi, N. Lopez-March, R. Märki, M. Martinelli, B. Muster, T. Nakada, A. D. Nguyen, T. D. Nguyen, C. Nguyen-Mau, J. Prisciandaro, A. Puig Navarro, B. Rakotomiaramanana, J. Rouvinet, O. Schneider, F. Soomro, P. Szczypka, M. Tobin, S. Tourneur, M. T. Tran, G. Veneziano, Z. Xu, J. Anderson, R. Bernet, E. Bowen, A. Bursche, N. Chiapolini, M. Chrzaszcz, Ch. Elsasser, E. Graverini, F. Lionetto, P. Lowdon, K. Müller, N. Serra, O. Steinkamp, B. Storaci, U. Straumann, M. Tresch, A. Vollhardt, R. Aaij, S. Ali, M. van Beuzekom, P. N. Y. David, K. De Bruyn, C. Farinelli, V. Heijne, W. Hulsbergen, E. Jans, P. Koppenburg, A. Kozlinskiy, J. van Leerdam, M. Merk, S. Oggero, A. Pellegrino, H. Snoek, J. van Tilburg, P. Tsopelas, N. Tuning, J. A. de Vries, T. Ketel, R. F. Koopman, R. W. Lambert, D. Martinez Santos, G. Raven, M. Schiller, V. Syropoulos, S. Tolk, A. Dovbnya, S. Kandybei, I. Raniuk, O. Okhrimenko, V. Pugatch, S. Bifani, N. Farley, P. Griffith, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, L. Pescatore, N. K. Watson, M. P. Williams, M. Adinolfi, J. Benton, N. H. Brook, A. Cook, M. Coombes, J. Dalseno, T. Hampson, S. T. Harnew, P. Naik, E. Price, C. Prouve, J. H. Rademacker, S. Richards, D. M. Saunders, N. Skidmore, D. Souza, J. J. Velthuis, D. Voong, W. Barter, M. -O. Bettler, H. V. Cliff, H. -M. Evans, J. Garra Tico, V. Gibson, S. Gregson, S. C. Haines, C. R. Jones, M. Sirendi, J. Smith, D. R. Ward, S. A. Wotton, S. Wright, J. J. Back, T. Blake, D. C. Craik, A. C. Crocombe, D. Dossett, T. Gershon, M. Kreps, C. Langenbruch, T. Latham, D. P. O'Hanlon, T. Pilař, A. Poluektov, M. M. Reid, R. Silva Coutinho, C. Wallace, M. Whitehead, S. Easo, R. Nandakumar, A. Papanestis, S. Ricciardi, F. F. Wilson, L. Carson, P. E. L. Clarke, G. A. Cowan, S. Eisenhardt, D. Ferguson, D. Lambert, H. Luo, A. -B. Morris, F. Muheim, M. Needham, S. Playfer, M. Alexander, J. Beddow, C. -T. Dean, L. Eklund, D. Hynds, S. Karodia, I. Longstaff, S. Ogilvy, M. Pappagallo, P. Sail, I. Skillicorn, F. J. P. Soler, P. Spradlin, A. Affolder, T. J. V. Bowcock, H. Brown, G. Casse, S. Donleavy, K. Dreimanis, S. Farry, R. Fay, K. Hennessy, D. Hutchcroft, M. Liles, B. McSkelly, G. D. Patel, J. D. Price, A. Pritchard, K. Rinnert, T. Shears, N. A. Smith, G. Ciezarek, S. Cunliffe, R. Currie, U. Egede, P. Fol, A. Golutvin, S. Hall, M. McCann, P. Owen, M. Patel, K. Petridis, F. Redi, I. Sepp, E. Smith, W. Sutcliffe, D. Websdale, R. B. Appleby, R. J. Barlow, T. Bird, P. M. Bjørnstad, S. Borghi, D. Brett, J. Brodzicka, L. Capriotti, S. Chen, S. De Capua, G. Dujany, M. Gersabeck, J. Harrison, C. Hombach, S. Klaver, G. Lafferty, A. McNab, C. Parkes, A. Pearce, S. Reichert, E. Rodrigues, P. Rodriguez Perez, M. Smith, S. -F. Cheung, D. Derkach, T. Evans, R. Gauld, E. Greening, N. Harnew, D. Hill, P. Hunt, N. Hussain, J. Jalocha, M. John, O. Lupton, S. Malde, E. Smith, S. Stevenson, C. Thomas, S. Topp-Joergensen, N. Torr, G. Wilkinson, I. Counts, P. Ilten, M. Williams, R. Andreassen, A. Davis, W. De Silva, B. Meadows, M. D. Sokoloff, L. Sun, J. Todd, J. E. Andrews, B. Hamilton, A. Jawahery, J. Wimberley, M. Artuso, S. Blusk, A. Borgia, T. Britton, S. Ely, P. Gandini, J. Garofoli, B. Gui, C. Hadjivasiliou, N. Jurik, M. Kelsey, R. Mountain, B. K. Pal, T. Skwarnicki, S. Stone, J. Wang, Z. Xing, L. Zhang, C. Baesso, M. Cruz Torres, C. Göbel, J. Molina Rodriguez, Y. Xie, D. A. Milanes, O. Grünberg, M. Heß, C. Voß, R. Waldi, T. Likhomanenko, A. Malinin, V. Shevchenko, A. Ustyuzhanin, F. Martinez Vidal, A. Oyanguren, P. Ruiz Valls, C. Sanchez Mayordomo, C. J. G. Onderwater, H. W. Wilschut, E. Pesen

A joint measurement is presented of the branching fractions $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data samples were collected in 2011 at a centre-of-mass energy of 7 TeV, and in 2012 at 8 TeV. The combined analysis produces the first observation of the $B^0_s\to\mu^+\mu^-$ decay, with a statistical significance exceeding six standard deviations, and the best measurement of its branching fraction so far. Read More

In any bipartition of a quantum state, it is proved that the negative values of the conditional version of sandwiched Tsallis relative entropy necessarily implies quantum entanglement. For any N, the separability ranges in the $1:N-1$ partition of symmetric one parameter families of noisy $N$-qubit W, GHZ, states are determined using the conditional quantum relative Tsallis entropy approach. The 1:N-1 separability range matches exactly with the range obtained through positive partial transpose criterion, for all N. Read More

We study the implications of the ELKO fermions as a cold dark matter candidate. Such fermions arise in theories that are not symmetric under the full Lorentz group. Although they do not carry electric charge, ELKOs can still couple to photons through a nonstandard interaction. Read More

Noncollinear magnets provide essential ingredients for the next generation memory technology. It is a new prospect for the Heusler materials, already well known due to the diverse range of other fundamental characteristics. Here, we present a combined experimental and theoretical study of novel noncollinear tetragonal Mn2RhSn Heusler material exhibiting unusually strong canting of its magnetic sublattices. Read More

Coin-flipping is a cryptographic task in which two physically separated, mistrustful parties wish to generate a fair coin-flip by communicating with each other. Chailloux and Kerenidis (2009) designed quantum protocols that guarantee coin-flips with near optimal bias. The probability of any outcome in these protocols is provably at most $1/\sqrt{2} + \delta$ for any given $\delta > 0$. Read More

This work reports an exchange bias (EB) effect up to room temperature in the binary intermetallic bulk compound Mn3.04Ge0.96. Read More

A search for neutral Higgs bosons in the minimal supersymmetric extension of the Standard Model (MSSM) decaying to a pair of b quarks or a pair of tau leptons, using events recorded by the CMS experiment at the LHC in 2011 and 2012 at the centre-of-mass energy of 7 TeV and 8 TeV respectively, is presented. The result is also presented for a search for the charged Higgs boson that can be produced in the top quark decay with subsequent decay of H+ in tau and neutrino. Results are also reported from a search for non-standard-model Higgs boson decays to pairs of new light bosons, each of which decays into the di-muon final state. Read More

The reconstruction and identification of physics objects in the CMS detector, in the context of the charged Higgs boson search analysis, are presented. The reconstruction algorithms and their performance in 7 TeV and 8 TeV LHC data are discussed. The identification of tau hadronic decays, the reconstruction of hadronic jets and missing transverse energy and the identification of b jets are described in detail. Read More

We consider the randomized decision tree complexity of the recursive 3-majority function. We prove a lower bound of $(1/2-\delta) \cdot 2.57143^h$ for the two-sided-error randomized decision tree complexity of evaluating height $h$ formulae with error $\delta \in [0,1/2)$. Read More

The quantum relative Renyi entropy of two density matrices was recently extended when the two do not commute, from which a conditional entropy is identified. This is here extended to the corresponding Tsallis relative entropy and to its conditional form. This new expression of Tsallis conditional entropy is shown to witness entanglement beyond the method based on global and local spectra of composite quantum states. Read More

We report a magnetization study of the Heusler compound Mn2PtGa that shows the existence of a magnetic-glass state. Mn2PtGa shows a first-order ferromagnetic (FM)/ferrimagnetic (FI) to antiferromagnetic (AFM) transition in contrast to the martensitic structural transition observed in several Heusler alloys. The kinetic arrest of this first-order FM (FI) to AFM transition leads to the observed magnetic-glass behavior. Read More

We report a large exchange-bias (EB) effect after zero-field cooling the new tetragonal Heusler compound Mn2PtGa from the paramagnetic state. The first-principle calculation and the magnetic measurements reveal that Mn2PtGa orders ferrimagnetically with some ferromagnetic (FM) inclusions. We show that ferrimagnetic (FI) ordering is essential to isothermally induce the exchange anisotropy needed for the zero-field cooled (ZFC) EB during the virgin magnetization process. Read More

We have begun a program of high altitude ballooning at the Indian Institute of Astrophysics, Bangalore. Recent advances in balloons as well as in electronics have made possible scientific payloads at costs accessible to university departments. The primary purpose of this activity is to test low-cost ultraviolet (UV) payloads for eventual space flight, but to also explore phenomena occurring in the upper atmosphere, including sprites and meteorite impacts, using balloon-borne payloads. Read More

The present work reports on the new soft ferromagnetic Heusler phases Fe2NiGe, Fe2CuGa, and Fe2CuAl, which in previous theoretical studies have been predicted to exist in a tetragonal regular Heusler structure. Together with the known phases Fe2CoGe and Fe2NiGa these materials have been synthesized and characterized by powder XRD, 57 Fe M\"ossbauer spectroscopy, SQUID and EDX measurements. In particular M\"ossbauer spectroscopy was used to monitor the degree of local atomic order/disorder and to estimate magnetic moments at the Fe sites from the hyperfine fields. Read More

The effect of Ge substitution on the magnetic, magnetocaloric and transport properties of Ni45Co5Mn38Sb12-xGex (x=0-3) has been investigated. The decrease in the exchange interaction brought by Ge substitution can be seen from the reduction in the magnetization of austenite phase and the increase in the martensitic transition temperature. Large magnetocaloric effect and magnetoresistance have been observed at room temperature, making it a potential material system for various applications. Read More