Studies of J/ψ production at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV
ALICE collaboration. (2020). Studies of J/ψ production at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics, 2020(2), Article 41. https://doi.org/10.1007/JHEP02(2020)041
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2020Discipline
FysiikkaYdin- ja kiihdytinfysiikan huippuyksikköPhysicsCentre of Excellence in Nuclear and Accelerator Based PhysicsCopyright
© CERN for the benefit of the ALICE Collaboration 2020
The inclusive J/ψ production in Pb–Pb collisions at the center-of-mass energy per nucleon pair √sNN = 5.02TeV, 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 √sNN = 5.02TeV is presented and compared with previous measurements at √sNN = 2.76TeV 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.
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https://converis.jyu.fi/converis/portal/detail/Publication/34625398
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