# name
Study of J/psi production and cold nuclear matter effects in pPb collisions at root S-NN=5 TeV

# metadata.dc.description.abstract[].value
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.

# metadata.dc.relation.ispartof[].value
Journal of High Energy Physics, 2014, vol. 2, num. 072, p. 1-26

# metadata.dc.rights[].value
cc-by (c) Camboni, Alessandro et al., 2014

# metadata.dc.source[].value
Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.subject.other[].value
Large Hadron Collider (France and Switzerland)

# metadata.dc.title[].value
Study of J/psi production and cold nuclear matter effects in pPb collisions at root S-NN=5 TeV