Measurement of prompt and nonprompt charmonium suppression in PbPb collisions at 5.02 TeV

Abstract

The nuclear modification factors of J/ψ and ψ(2S) mesons are measured in PbPb collisions at a centre-of-mass energy per nucleon pair of sNN=5.02TeV . The analysis is based on PbPb and pp data samples collected by CMS at the LHC in 2015, corresponding to integrated luminosities of 464 μb-1 and 28 pb-1 , respectively. The measurements are performed in the dimuon rapidity range of |y|25 GeV/c is seen with respect to that observed at intermediate pT . The prompt ψ(2S) meson yield is found to be more suppressed than that of the prompt J/ψ mesons in the entire pT range

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