The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √s NN=2.76TeV 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.

B. Abelev, J. Adam, D. Adamová, A. Adare, M. Aggarwal, G. Aglieri Rinella, et al. (2012). J/ψ Suppression at Forward Rapidity in Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV. PHYSICAL REVIEW LETTERS, 109, 1-11 [10.1103/PhysRevLett.109.072301].

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

AGOSTINELLI, ANDREA;A. Alici;ARCELLI, SILVIA;BASILE, MAURIZIO;BELLINI, FRANCESCA;CIFARELLI, LUISA;GUERZONI, BARBARA;SCIOLI, GILDA;
2012

Abstract

The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √s NN=2.76TeV down to zero transverse momentum in the rapidity range 2.5
2012
B. Abelev, J. Adam, D. Adamová, A. Adare, M. Aggarwal, G. Aglieri Rinella, et al. (2012). J/ψ Suppression at Forward Rapidity in Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV. PHYSICAL REVIEW LETTERS, 109, 1-11 [10.1103/PhysRevLett.109.072301].
B. Abelev;J. Adam;D. Adamová;A. Adare;M. Aggarwal;G. Aglieri Rinella;A. Agocs;A. Agostinelli;S. Aguilar Salazar;Z. Ahammed;A. Ahmad Masoodi;N. Ahmad;S...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/142507
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