Study of ψ(2S) production and cold nuclear matter effects in pPb collisions at sqrt(s(NN))=5 TeV

Journal article

Study of ψ(2S) production and cold nuclear matter effects in pPb collisions at √s_NN = 5 TeV

The production of ψ(2S) mesons is studied in dimuon final states using proton-lead (pPb) collision data collected by the LHCb detector. The data sample corresponds to an integrated luminosity of 1.6 nb⁻¹. The nucleon-nucleon centre-of-mass energy of the pPb collisions is √s_NN = 5 TeV. The measurement is performed using ψ(2S) mesons with transverse momentum less than 14 GeV/c and rapidity y in the ranges 1.5 < y < 4.0 and −5.0 < y < −2.5 in the nucleon-nucleon centre-of-mass system. The forward-backward production ratio and the nuclear modification factor are determined for ψ(2S) mesons. Using the production cross- section results of ψ(2S) and J/ψ mesons from b-hadron decays, the bb̅ cross-section in pPb collisions at √s_NN = 5 TeV is obtained.

Authors: Aaij, R; Abellán Beteta, C; Adeva, B; Harnew, N

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer Verlag
• Journal: Journal of High Energy Physics
• Volume: 2016
• Issue: 3
• Publication date: 2016-03-18
• Acceptance date: 2016-02-29
• DOI: 10.1007/JHEP03(2016)133
• EISSN: 1029-8479
• ISSN: 1126-6708
• Keywords: SBTMR; heavy-ion collision; relativistic heavy ion physics; heavy ion experiments; particle and resonance production; quarkonium