Inclusive J/psi production at forward and backward rapidity in p-Pb collisions at root s(NN)=8.16 TeV

The ALICE Collaboration, S. Acharya, E. J. Brucken, B. Chang, T. E. Hilden, D. J. Kim, V. Litichevskyi, M. M. Mieskolainen, R. Orava, J. E. Parkkila, J. Rak, S. S. Räsänen, S. Saarinen, M. Slupecki, T. W. Snellman, W. H. Trzaska, M. Vargyas, J. Viinikainen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Inclusive J/psi production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision root s(NN) = 8.16 TeV, using the ALICE detector at the CERN LHC. The J/psi meson is reconstructed, via its decay to a muon pair, in the centreof-mass rapidity intervals 2.03 < Y-cms < 3.53 and -4.46 < Y-cms < -2.96, where positive and negative Y(cms )refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is PT < 20 GeV/c. In this paper, Y-cms- and P-T-differential cross sections for inclusive J/psi production are presented, and the corresponding nuclear modification factors R-pPb are shown. Forward results show a suppression of the J/psi yield with respect to pp collisions, concentrated in the region P-T less than or similar to 5 GeV/c. At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in p-Pb collisions at root s(NN) = 5.02 TeV and to theoretical calculations. Finally, the ratios R-FB between forward- and backward-Y-cms R-pPb values are shown and discussed.
Original languageEnglish
Article number160
JournalJournal of High Energy Physics
Volume2018
Issue number7
Number of pages27
ISSN1029-8479
DOIs
Publication statusPublished - 25 Jul 2018
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences
  • Heavy Ion Experiments
  • TRANSVERSE-MOMENTUM DEPENDENCE
  • RANGE ANGULAR-CORRELATIONS
  • PROTON-NUCLEUS COLLISIONS
  • LONG-RANGE
  • CHARMONIUM PRODUCTION
  • PPB COLLISIONS
  • SUPPRESSION
  • LHC
  • ENERGY
  • COMOVERS

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