Production of Strange and Charm Hadrons in Pb+Pb Collisions at sNN = 5.02 TeV

Abstract

Using a quark combination model with the equal-velocity combination approximation, we study the production of hadrons with strangeness and charm flavor quantum numbers in Pb+Pb collisions at sNN= 5.02 TeV. We present analytical expressions and numerical results for these hadrons’ transverse momentum spectra and yield ratios. Our numerical results agree well with the experimental data available. The features of strange and charm hadron production in the quark–gluon plasma at the early stage of heavy ion collisions are also discussed.

Do quarkonia thermalize at the LHC?

“…Experimentally charmonium production in heavy-ion collisions was measured at SPS [11,12], RHIC [13][14][15] and LHC [16][17][18][19][20][21][22][23][24]. The systematic difference in the production pattern between nucleus-nucleus (A-A) collisions and p-p collisions is quantified by the nuclear modification factor (R AA ), defined as the ratio between the quarkonium yield in nuclear collisions and the yield in p-p collisions scaled by the number of binary nucleon-nucleon collisions.…”