Measurement of J/ψ production cross-sections in pp collisions at √s = 5 TeV

LHCb Collaboration

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The production cross-sections of J/ψ mesons in proton-proton collisions at a centre-of-mass energy of √s = 5 TeV are measured using a data sample corresponding to an integrated luminosity of 9.13 ± 0.18 pb−1, collected by the LHCb experiment. The cross-sections are measured differentially as a function of transverse momentum, pT, and rapidity, y, and separately for J/ψ mesons produced promptly and from beauty hadron decays (nonprompt). With the assumption of unpolarised J/ψ mesons, the production cross-sections integrated over the kinematic range 0 < pT< 20 GeV/c and 2.0 < y < 4.5 are


where the first uncertainties are statistical and the second systematic. These cross-sections are compared with those at √s = 8 TeV and 13 TeV, and are used to update the measurement of the nuclear modification factor in proton-lead collisions for J/ψ mesons at a centre-of-mass energy per nucleon pair of √sNN = 5 TeV. The results are compared with theoretical predictions. 

Original languageEnglish
Article number181
Number of pages32
JournalJournal of High Energy Physics
Issue number11
Publication statusPublished - 24 Nov 2021

Bibliographical note

Publisher Copyright:
© 2021, The Author(s).


  • Hadron-Hadron scattering (experiments)
  • Heavy quark production
  • QCD
  • Quarkonium

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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