Study of J/ψ production and cold nuclear matter effects in pPb collisions at √sNN = 5 TeV
Title: | Study of J/ψ production and cold nuclear matter effects in pPb collisions at √sNN = 5 TeV
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Author: | LHCb Collaboration
Adeva Andany, Bernardo
Álvarez Cartelle, Paula
Dosil Suárez, Álvaro
Fernández Albor, Víctor Manuel
Gallas Torreira, Abraham Antonio
Hernando Morata, José Ángel
Pazos Álvarez, Antonio
Pérez Trigo, Eliseo
Plo Casasus, Máximo
Rodríguez Pérez, Pablo
Romero Vidal, Antonio
Saborido Silva, Juan José
Sanmartín Sedes, Brais
Santamarina Ríos, Cibrán
Seco Miguélez, Marcos Antonio
Vázquez Regueiro, Pablo
Vázquez Sierra, Carlos
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Affiliation: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE)
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Subject: | Relativistic heavy ion physics | Quarkonium | Heavy quark production | Heavy Ions | Particle and resonance production | |
Date of Issue: | 2014
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Publisher: | Springer
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Citation: | Aaij, R., Adeva, B., Adinolfi, M. et al. Study of J/ψ production and cold nuclear matter effects in pPb collisions at √sNN = 5 TeV. J. High Energ. Phys. 2014, 72 (2014). https://doi.org/10.1007/JHEP02(2014)072
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Abstract: | 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. |
Publisher version: | https://doi.org/10.1007/JHEP02(2014)072 |
URI: | http://hdl.handle.net/10347/21932
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DOI: | 10.1007/JHEP02(2014)072 |
ISSN: | 1029-8479
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Rights: | © CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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