Measurement Of Prompt And Nonprompt Charmonium Suppression İn Pbpbpbpb Collisions At 5.02TeV
Yükleniyor...
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Link
Erişim Hakkı
Özet
The nuclear modification factors of J/?J/? and ?(2S)?(2S) mesons are measured in PbPbPbPb collisions at a centre-of-mass energy per nucleon pair of sNN????=5.02TeVsNN=5.02TeV. The analysis is based on PbPbPbPband pppp data samples collected by CMS at the LHC in 2015, corresponding to integrated luminosities of 464?b?1?b?1 and 28pb-1pb-1, respectively. The measurements are performed in the dimuon rapidity range of |y|<2.4|y|<2.4 as a function of centrality, rapidity, and transverse momentum (pTpT ) from pT=3pT=3 GeV/cGeV/c in the most forward region and up to 50GeV/cGeV/c. Both prompt and nonprompt (coming from b hadron decays) J/?J/? mesons are observed to be increasingly suppressed with centrality, with a magnitude similar to the one observed at sNN????=2.76TeVsNN=2.76TeV for the two J/?J/? meson components. No dependence on rapidity is observed for either prompt or nonprompt J/?J/? mesons. An indication of a lower prompt J/?J/? meson suppression at pT>25pT>25 GeV/cGeV/c is seen with respect to that observed at intermediate pTpT. The prompt ?(2S)?(2S) meson yield is found to be more suppressed than that of the prompt J/?J/? mesons in the entire pTpT range.
Açıklama
Anahtar Kelimeler
CMS, Physics
Kaynak
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
