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Back, J. J.; Craik, Daniel; Dossett, D.; Gershon, T. J.; Harrison, P. F.; Kreps, Michal; Latham, Thomas; Pilar, T.; Poluektov, Anton; Reid, Matthew M.; Silva Coutinho, R.; Whitehead, M. (Mark); Williams, M. P.; HASH(0x55942ed33c58) (2013)
Publisher: American Physical Society
Languages: English
Types: Article
Subjects: QC

Classified by OpenAIRE into

arxiv: High Energy Physics::Experiment, Nuclear Experiment, Nuclear Theory
The production of J/ψ mesons with rapidity 1.5 < y < 4.0 or −5.0 < y < −2.5 and transverse momentum p T < 14 GeV/c is studied with the LHCb detector in proton-lead collisions at a nucleon-nucleon centre-of-mass energy √sNN = 5TeV. The J/ψ mesons are reconstructed using the dimuon decay mode. The analysis is based on a data sample corresponding to an integrated luminosity of about 1.6 nb−1. For the first time the nuclear modification factor and forward-backward production ratio are determined separately for prompt J/ψ mesons and J/ψ from b-hadron decays. Clear suppression of prompt J/ψ production with respect to proton-proton collisions at large rapidity is observed, while the production of J/ψ from b-hadron decays is less suppressed. These results show good agreement with available theoretical predictions. The measurement shows that cold nuclear matter effects are important for interpretations of the related quark-gluon plasma signatures in heavy-ion collisions.
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    • 24 Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, Netherlands
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    • 27 Soltan Institute for Nuclear Studies, Warsaw, Poland
    • 28 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
    • 29 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
    • 30 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
    • 31 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
    • 32 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
    • 33 Budker Institute of Nuclear Physics (BINP), Novosibirsk, Russia
    • 34 Institute for High Energy Physics (IHEP), Protvino, Russia
    • 35 Universitat de Barcelona, Barcelona, Spain
    • 36 Universidad de Santiago de Compostela, Santiago de Compostela, Spain
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    • 38 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
    • 39 Physik Institut, Universität Zürich, Zürich, Switzerland
    • 40 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
    • 41 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
    • 42 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
    • 43 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
    • 44 Department of Physics, University of Warwick, Coventry, United Kingdom
    • 45 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
    • 46 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
    • 47 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
    • 48 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
    • 49 Imperial College London, London, United Kingdom
    • 50 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
    • 51 Department of Physics, University of Oxford, Oxford, United Kingdom
    • 52 Syracuse University, Syracuse, NY, United States
    • 53 CC-IN2P3, CNRS/IN2P3, Lyon-Villeurbanne, France o
    • 54 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil p
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