ALICE measurement of the J/ψ nuclear modification factor at mid-rapidity in Pb–Pb collisions at √sNN=5.02 TeV

Abstract

ALICE at the LHC provides unique capabilities to study charmonium production at low transverse momenta (pT). At central rapidity, (|y| < 0.8), ALICE can reconstruct J/ψ via their decay into two electrons down to zero pT. Results at mid-rapidity on the inclusive J/ψ nuclear modification factor RAA as a function of centrality in Pb-Pb collisions at √sNN = 5.02 TeV and comparisons to lower energies and models are shown. In addition, the yield of the J/ψ produced with very low pT in the most peripheral collisions and the J/ψ elliptic flow (v2) are also presented.