In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2020, No. 2 ( 2020-02)
Abstract:
The inclusive J /ψ production in Pb–Pb collisions at the center-of-mass energy per nucleon pair $$ \sqrt{s_{\mathrm{NN}}} $$ s 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 ( R AA ). The R AA at $$ \sqrt{s_{\mathrm{NN}}} $$ s NN = 5 . 02 TeV is presented and compared with previous measurements at $$ \sqrt{s_{\mathrm{NN}}} $$ s 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 R AA 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.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP02(2020)041
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2020
detail.hit.zdb_id:
2027350-2