Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at √sNN= 5.02 TeV
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Título: | Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at √sNN= 5.02 TeV
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Autor/a: | ALICE Collaboration
Armesto Pérez, Néstor
González Ferreiro, Elena
Pajares Vales, Carlos
Salgado López, Carlos Alberto
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Centro/Departamento: | 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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Data: | 2015
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Editor: | Springer
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Cita bibliográfica: | Adam, J., Adamová, D., Aggarwal, M.M. et al. Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at √sNN= 5.02 TeV. J. High Energ. Phys. 2015, 55 (2015). https://doi.org/10.1007/JHEP06(2015)055
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Resumo: | We have studied the transverse-momentum (p T) dependence of the inclusive J/ψ production in p-Pb collisions at √sNN= 5.02 TeV, in three center-of-mass rapidity (y cms) regions, down to zero p T. Results in the forward and backward rapidity ranges (2.03 < y cms < 3.53 and −4.46 < y cms < −2.96) are obtained by studying the J/ψ decay to μ + μ −, while the mid-rapidity region (−1.37 < y cms < 0.43) is investigated by measuring the e+e− decay channel. The p T dependence of the J/ψ production cross section and nuclear modification factor are presented for each of the rapidity intervals, as well as the J/ψ mean p T values. Forward and mid-rapidity results show a suppression of the J/ψ yield, with respect to pp collisions, which decreases with increasing p T. At backward rapidity no significant J/ψ suppression is observed. Theoretical models including a combination of cold nuclear matter effects such as shadowing and partonic energy loss, are in fair agreement with the data, except at forward rapidity and low transverse momentum. The implications of the p-Pb results for the evaluation of cold nuclear matter effects on J/ψ production in Pb-Pb collisions are also discussed. |
Versión do editor: | https://doi.org/10.1007/JHEP06(2015)055 |
URI: | http://hdl.handle.net/10347/21555
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DOI: | 10.1007/JHEP06(2015)055 |
E-ISSN: | 1029-8479
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Dereitos: | © CERN, for the benefit of the ALICE 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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