The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √s_NN=2.76  TeV down to zero transverse momentum in the rapidity range 2.5<y<4. A suppression of the inclusive J/ψ yield in Pb-Pb is observed with respect to the one measured in pp collisions scaled by the number of binary nucleon-nucleon collisions. The nuclear modification factor, integrated over the 0%–80% most central collisions, is 0.545±0.032(stat)±0.083(syst) and does not exhibit a significant dependence on the collision centrality. These features appear significantly different from measurements at lower collision energies. Models including J/ψ production from charm quarks in a deconfined partonic phase can describe our data.

J/ψ Suppression at Forward Rapidity in Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV

DE CARO, ANNALISA;DE GRUTTOLA, DANIELE;DE PASQUALE, Salvatore;FUSCO GIRARD, Mario;PAGANO, PAOLA;VIRGILI, Tiziano;
2012-01-01

Abstract

The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √s_NN=2.76  TeV down to zero transverse momentum in the rapidity range 2.5
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3881973
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