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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185636
Study of J/psi production and cold nuclear matter effects in pPb collisions at root S-NN=5 TeV
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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.
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CAMBONI, Alessandro, et al. Study of J/psi production and cold nuclear matter effects in pPb collisions at root S-NN=5 TeV. Journal of High Energy Physics. 2014. Vol. 2, num. 072, pags. 1-26. ISSN 1126-6708. [consulted: 2 of August of 2026]. Available at: https://hdl.handle.net/2445/185636