Quarkonium measurements in Pb-Pb and p-Pb collisions with ALICE at the LHC

TL;DR

This paper reports on measurements of quarkonium production in Pb-Pb and p-Pb collisions at the LHC using the ALICE detector, focusing on nuclear modification factors of J/ψ and Υ(1S) states.

Contribution

It provides new measurements of quarkonium nuclear modification factors in different collision systems and rapidity ranges, enhancing understanding of quark-gluon plasma effects.

Findings

J/ψ nuclear modification factor in Pb-Pb and p-Pb collisions

Υ(1S) nuclear modification factor in Pb-Pb collisions

Differential suppression patterns observed across rapidities

Abstract

The ALICE experiment has measured quarkonium production in Pb-Pb collisions at \sqrt{sNN} = 2.76 TeV and in p-Pb collisions at \sqrt{sNN} = 5.02 TeV. The measurements are performed in the dielectron de- cay channel at mid-rapidity (|yLAB| < 0.9) and in the dimuon decay channel at forward rapidity (2.5 < yLAB < 4). We focus in particular on the J/{\psi} nuclear modification factor measured both in Pb-Pb and p- -Pb collisions and on the {\Upsilon}(1S) nuclear modification factor measured in Pb-Pb collisions.