Measurement of J/psi production at the LHC with the ALICE experiment

TL;DR

This paper reports measurements of J/psi production in proton-proton and lead-lead collisions at the LHC using the ALICE detector, providing insights into quarkonium behavior in high-energy nuclear matter.

Contribution

It presents new measurements of J/psi production at LHC energies, contributing to understanding quarkonium suppression and production mechanisms in heavy ion collisions.

Findings

J/psi production measured at 7 TeV in pp collisions

Initial results on J/psi in Pb-Pb collisions

Data supports studies of quark-gluon plasma effects

Abstract

ALICE (A Large Ion Collider Experiment) aims at studying the behaviour of nuclear matter at high energy densities and the transition to the Quark Gluon Plasma (QGP), expected to occur in ultra-relativistic heavy ion collisions. Quarkonia production measurements in both Pb-Pb and pp collisions play a crucial role in the ALICE physics program. Quarkonium detection is possible in ALICE at both forward (in the dimuon channel) and mid-rapidity (in the dielectron channel). In 2010, the Large Hadron Collider has provided pp collisions at sqrt(s)=7 TeV and Pb-Pb collisions at sqrt(sNN)=2.76 TeV. The ALICE results on J/psi production in pp collisions are presented, along with the status of the Pb-Pb analysis.