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

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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 sNN−−−−√=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 bb¯¯ cross-section in pPb collisions at sNN−−−−√=5 TeV is obtained.

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Journal of High Energy Physics, 2016, vol. 2016, num. 133

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cc-by (c) Garrido Beltrán, Lluís et al., 2016

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Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.title[].value
Study of ψ(2S) production and cold nuclear matter effects in pPb collisions at √ sNN = 5 TeV