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Fragmentation of jets containing a prompt J/psi meson in PbPb and pp collisions at root{s_NN}=5.02 TeV

CMS Collaboration: Fragmentation of jets containing a prompt J/psi meson in PbPb and pp collisions at root{s_NN}=5.02 TeV.
Phys. Lett. B. 825, 1-25, (cikkazonosító: 136842), 2022.
Folyóirat-mutatók:
D1 Nuclear and High Energy Physics
cím:
Fragmentation of jets containing a prompt J/psi meson in PbPb and pp collisions at root{s_NN}=5.02 TeV
szerzők:
  • CMS Collaboration
kiadás éve:
2022
típus:
folyóiratcikk
műfaj:
idegen nyelvű folyóiratközlemény külföldi lapban
folyóirat:
Physics Letters B (ISSN: 0370-2693)
nyelv:
angol
MAB:
természettudományok, fizikai tudományok
tárgyszavak:
CMS, Heavy ions, Quarkonia, Jets
absztrakt:
Jets containing a prompt J/psi meson are studied in lead-lead collisions at a nucleon-nucleon center-of mass energy of 5.02 TeV, using the CMS detector at the LHC. Jets are selected to be in the transverse momentum range of 30 <= pT <= 40 GeV. The J/psi yield in these jets is evaluated as a function of the jet fragmentation variable z, the ratio of the J/psi T-p to the jet p(T). The nuclear modification factor, R-AA, is then derived by comparing the yield in lead-lead collisions to the corresponding expectation based on proton-proton data, at the same nucleon-nucleon center-of-mass energy. The suppression of the J/psi yield shows a dependence on z, indicating that the interaction of the J/psi with the quark-gluon plasma formed in heavy ion collisions depends on the fragmentation that gives rise to the J/psi meson.
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