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.

Fragmentation of jets containing a prompt J/ψ meson in PbPb and pp collisions at sjavax.xml.bind.JAXBElement@7ce32baf=5.02TeV / 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, T., Mikulec, I., Pitters, F.M., Rad, N., Schieck, J., Schofbeck, R., Spanring, M., Templ, S., Waltenberger, W., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 825:(2022), p. 136842. [10.1016/j.physletb.2021.136842]

Fragmentation of jets containing a prompt J/ψ meson in PbPb and pp collisions at sjavax.xml.bind.JAXBElement@7ce32baf=5.02TeV

Del Re D.;Longo E.;Organtini G.;Paramatti R.;Quaranta C.;Rahatlou S.;Santanastasio F.;Tramontano R.;
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
CMS; Heavy ions; Jets; Quarkonia
01 Pubblicazione su rivista::01a Articolo in rivista
Fragmentation of jets containing a prompt J/ψ meson in PbPb and pp collisions at sjavax.xml.bind.JAXBElement@7ce32baf=5.02TeV / 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, T., Mikulec, I., Pitters, F.M., Rad, N., Schieck, J., Schofbeck, R., Spanring, M., Templ, S., Waltenberger, W., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 825:(2022), p. 136842. [10.1016/j.physletb.2021.136842]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1622583
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