Inclusive J/ψ production at forward and backward rapidity in p-Pb collisions at √sNN=8.16 TeV

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Abstract

Inclusive J/ψ production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision sNN=8.16 TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed, via its decay to a muon pair, in the centre-of-mass rapidity intervals 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, where positive and negative ycms refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is pT < 20 GeV/c. In this paper, ycms- and pT-differential cross sections for inclusive J/ψ production are presented, and the corresponding nuclear modification factors RpPb are shown. Forward results show a suppression of the J/ψ yield with respect to pp collisions, concentrated in the region pT ≲ 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 sNN=5.02 TeV and to theoretical calculations. Finally, the ratios RFB between forward- and backward-ycmsRpPb values are shown and discussed.[Figure not available: see fulltext.]. © 2018, The Author(s).

Details

Authors
Organisations
External organisations
  • University of Copenhagen
  • Variable Energy Cyclotron Centre
  • University of California, Berkeley
  • Nuclear Physics Institute, ASCR
  • Panjab University
  • CERN
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics

Keywords

  • Heavy Ion Experiments
Original languageEnglish
JournalJournal of High Energy Physics
Volume2018
Issue number7
Publication statusPublished - 2018 Jul 25
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

Export Date: 18 September 2018