Jets containing a prompt J/ψ 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<40GeV. The J/ψ yield in these jets is evaluated as a function of the jet fragmentation variable z, the ratio of the J/ψ pT to the jet pT. The nuclear modification factor, RAA, 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/ψ yield shows a dependence on z, indicating that the interaction of the J/ψ with the quark-gluon plasma formed in heavy ion collisions depends on the fragmentation that gives rise to the J/ψ meson.

Tumasyan A., Adam W., Bergauer T., Dragicevic M., Ero J., Escalante Del Valle A., et al. (2022). Fragmentation of jets containing a prompt J/ψ meson in PbPb and pp collisions at sqrt(sNN)=5.02TeV. PHYSICS LETTERS. SECTION B, 825, 1-25 [10.1016/j.physletb.2021.136842].

Fragmentation of jets containing a prompt J/ψ meson in PbPb and pp collisions at sqrt(sNN)=5.02TeV

Battilana C.;Bonacorsi D.;Borgonovi L.;Braibant-Giacomelli S.;Castro A.;Cuffiani M.;Diotalevi T.;Fanfani A.;Fontanesi E.;Giommi L.;Guiducci L.;Iemmi F.;Primavera F.;Rovelli T.;Siroli G. P.;
2022

Abstract

Jets containing a prompt J/ψ 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<40GeV. The J/ψ yield in these jets is evaluated as a function of the jet fragmentation variable z, the ratio of the J/ψ pT to the jet pT. The nuclear modification factor, RAA, 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/ψ yield shows a dependence on z, indicating that the interaction of the J/ψ with the quark-gluon plasma formed in heavy ion collisions depends on the fragmentation that gives rise to the J/ψ meson.
2022
Tumasyan A., Adam W., Bergauer T., Dragicevic M., Ero J., Escalante Del Valle A., et al. (2022). Fragmentation of jets containing a prompt J/ψ meson in PbPb and pp collisions at sqrt(sNN)=5.02TeV. PHYSICS LETTERS. SECTION B, 825, 1-25 [10.1016/j.physletb.2021.136842].
Tumasyan A.; Adam W.; Bergauer T.; Dragicevic M.; Ero J.; Escalante Del Valle A.; Fruhwirth R.; Jeitler M.; Krammer N.; Lechner L.; Liko D.; Madlener ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/862456
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