J/ψ production at forward rapidity in Pb-Pb collisions at √sNN =2.76 TeV, measured with the ALICE detector

摘要

In the ALICE experiment, at forward rapidity (2.5 < y < 4), the production of heavy quarkonium states is measured via their μ~+μ ~- decay channels. We present the first measurement of inclusive J/ψ production, down to p_T = 0, from Pb-P-b data collected at the LHC at √sNN =2.76 TeV. Preliminary results on the nuclear modification factor (R_(AA)) and the central to peripheral nuclear modification factor (R_(CP)) show J/ψ suppression with no significant centrality dependence and an integrated.