Studies of J/ψ production at forward rapidity in Pb–Pb collisions at $$\sqrt{s_{\mathrm{NN}}}$$ = 5.02 TeV
The inclusive J/ψ production in Pb–Pb collisions at the center-of-mass energy per nucleon pair $$\sqrt{s_{\mathrm{NN}}}$$ = 5.02 TeV, measured with the ALICE detector at the CERN LHC, is reported. The J/ψ meson is reconstructed via the dimuon decay channel at forward rapidity (2.5 < y < 4) down to zero transverse momentum. The suppression of the J/ψ yield in Pb–Pb collisions with respect to binary-scaled pp collisions is quantified by the nuclear modification factor (RAA). The RAA at $$\sqrt{s_{\mathrm{NN}}}$$ = 5.02 TeV is presented and compared with previous measurements at $$\sqrt{s_{\mathrm{NN}}}$$= 2.76 TeV as a function of the centrality of the collision, and of the J/ψ transverse momentum and rapidity. The inclusive J/ψ RAA shows a suppression increasing toward higher transverse momentum, with a steeper dependence for central collisions. The modification of the J/ψ average transverse momentum and average squared transverse momentum is also studied. Comparisons with the results of models based on a transport equation and on statistical hadronization are carried out.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The ALICE collaboration; ALICE Collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC05-00OR22725
- OSTI ID:
- 1615299
- Alternate ID(s):
- OSTI ID: 1822000
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2020, Issue 2; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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