2011/01/27 by E. G. Ferreiro, F. Fleuret, Ferreiro, E. G. +9
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.1101.5295
4 pages, 2 figures, talk given by N. Matagne at the conference "ICPAQGP-2010", Goa, India, 6-10 December 2010, submitted to Nuclear Physics A
openalex publication_date 2011/01/27 · arxiv created 2011/02/08 · arxiv updated 2015/03/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Taking into account the gluon shadowing and the J/ψ nuclear absorption, we evaluate the Cold Nuclear Matter (CNM) effects on J/ψ production in pPb and PbPb collisions at the design LHC energy for PbPb collisions, √sNN=5.5 TeV. In view of the good agreement between the yield prediction using the LO CSM and the ALICE data at 7 TeV, we employ the latter model to use a complete description of the kinematics of the underlying 2 → 2 partonic process, namely g + g → J/ψ+ g. We observe a large J/ψ suppression in pPb and PbPb collisions due to the strong shadowing of the gluon distribution in the lead ion at the corresponding gluon momentum fractions. This suppression from CNM effects has a strong rapidity dependence which may compensate, partially or completely, that of of the predicted charm recombination in PbPb collisions.