Study of j/ψ production and cold nuclear matter effects in pPb collisions at √SNN = 5 TeV

The Lhcb Collaboration

Research output: Contribution to journalArticle

72 Scopus citations

Abstract

The production of J/ψ mesons with rapidity 1.5 < y < 4.0 or −5.0 < y < −2.5 and transverse momentum pT< 14 GeV/c is studied with the LHCb detector in proton-lead collisions at a nucleon-nucleon centre-of-mass energy √SNN = 5 TeV. 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.

Original languageEnglish (US)
Article number72
JournalJournal of High Energy Physics
Volume2014
Issue number2
DOIs
StatePublished - 2014

Keywords

  • Heavy Ions
  • Heavy quark production
  • Particle and resonance production
  • Quarkonium
  • Relativistic heavy ion physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Study of j/ψ production and cold nuclear matter effects in pPb collisions at √SNN = 5 TeV'. Together they form a unique fingerprint.

  • Cite this