Differential studies of inclusive J/ψ and ψ(2S) production at forward rapidity in Pb-Pb collisions at √sNN = 2.76 TeV
ALICE Collaboration. (2016). Differential studies of inclusive J/ψ and ψ(2S) production at forward rapidity in Pb-Pb collisions at √sNN = 2.76 TeV. Journal of High Energy Physics, 2016(5), Article 179. https://doi.org/10.1007/JHEP05(2016)179
Julkaistu sarjassa
Journal of High Energy PhysicsTekijät
Päivämäärä
2016Tekijänoikeudet
© CERN, for the benefit of the ALICE Collaboration. This is an open access article published by Springer and distributed under the terms of the Creative Commons Attribution License. Funded by SCOAP3.
The production of J/ψ and ψ(2S) was studied with the ALICE detector in
Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity (2.5 <
y < 4) down to zero transverse momentum (pt) in the dimuon decay channel. Inclusive
J/ψ yields were extracted in different centrality classes and the centrality dependence of
the average pt is presented. The J/ψ suppression, quantified with the nuclear modification
factor (RAA), was measured as a function of centrality, transverse momentum and rapidity.
Comparisons with similar measurements at lower collision energy and theoretical models
indicate that the J/ψ production is the result of an interplay between color screening
and recombination mechanisms in a deconfined partonic medium, or at its hadronization.
Results on the ψ(2S) suppression are provided via the ratio of ψ(2S) over J/ψ measured
in pp and Pb-Pb collisions.
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SpringerISSN Hae Julkaisufoorumista
1127-2236Asiasanat
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