Charmonium production in pp, pPb and PbPb collisions with CMS

Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions 2016

Ståhl, Andre Govinda^1

Laboratoire Leprince-Ringuet, École Polytechnique, Palaiseau Cedex

F91128, France^1

关键词: Charmonium;    Nuclear modification factors;    Pb-Pb collisions;    Photoproductions;    Pp collisions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/832/1/012031/pdf
DOI  :  10.1088/1742-6596/832/1/012031

来源: IOP

【 摘 要 】

The LHC Run 1 results of the analysis of charmonium production in pp, pPb and PbPb collisions with the CMS experiment are reported. The coherent J/ψ photoproduction cross section is measured as a function of rapidity in ultra-peripheral PbPb collisions at 2.76 TeV. The forward-backward ratio of prompt J/ψ yields in pPb collisions at 5.02 TeV is presented as a function of the event activity and pT. The nuclear modification factor of prompt J/ψ in PbPb collisions at 2.76 TeV is shown as a function of rapidity, centrality and pT. Finally, the ratio of ψ(2S) to J/ψ yields in PbPb collisions with respect to pp collisions at 2.76 TeV is analysed in different rapidity and centrality bins.