Charmonium production in pp, p—Pb and Pb—Pb collisions at forward rapidity with ALICE at the LHC

15th International Conference on Strangeness in Quark Matter

Camejo, Arianna Batista^1

Université Blaise Pascal, Laboratoire de Physique Corpusculaire, Clermont-Ferrand, France^1

关键词: Charmonium;    Final state;    Forward rapidity;    Nuclear matters;    Pb-Pb collisions;    Pp collisions;    Production cross section;    Regeneration mechanisms;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/668/1/012049/pdf
DOI  :  10.1088/1742-6596/668/1/012049

来源: IOP

【 摘 要 】

This contribution presents recent ALICE measurements on charmonium production at forward rapidity in pp collisions at √s = 7 TeV, p-Pb at √sNN = 5.02 TeV and Pb-Pb at √sNN = 2.76 TeV. The charmonium production cross sections in pp collisions are in good agreement with calculations within the NRQCD approach. The comparison between J/Ψ and Ψ(2S) yields in p-Pb collisions indicates the presence of Cold Nuclear Matter effects on charmomium production in the final state. In Pb-Pb collisions the measured J/Ψ suppression is in agreement with models that introduce J/Ψ regeneration mechanisms through the recombination of cc pairs produced in the medium.