English

J/$\psi$ production measurements at mid-rapidity using the ALICE detector at the LHC

Nuclear Experiment 2020-10-19 v1 High Energy Physics - Experiment

Abstract

Charmonium production is highly sensitive to the hot and dense medium created in (ultra)-relativistic heavy-ion collisions, known as the Quark-Gluon Plasma (QGP). Measurements of the J/ψ\psi production serve as important tools for studying the properties of this medium. In addition to QGP effects, the J/ψ\psi production is modified by the presence of cold nuclear matter (CNM) effects such as shadowing or parton energy loss. These effects are studied in proton-nucleus collisions where no QGP formation is expected. In order to quantify how the J/ψ\psi production is modified by the medium, the vacuum production is modelled in proton-proton (pp) collisions and used as a reference for heavy-ion and proton-nucleus collisions. Measurements in pp collisions also serve as important tools for testing Quantum Chromodynamic (QCD) based models in both perturbative and non-perturbative regimes. The ALICE detector has the unique capability of measuring the J/ψ\psi at mid-rapidity through the di-electron channel down to zero transverse momentum. In this contribution a selection of the newest J/ψ\psi measurements at mid-rapidity performed by the ALICE Collaboration during the LHC Run 2 period will be discussed.

Keywords

Cite

@article{arxiv.2010.08279,
  title  = {J/$\psi$ production measurements at mid-rapidity using the ALICE detector at the LHC},
  author = {Ingrid McKibben Lofnes},
  journal= {arXiv preprint arXiv:2010.08279},
  year   = {2020}
}

Comments

6 pages, 7 figures, Proceedings of EPS-HEP Conference 2019, 10-17 July, Ghent, Belgium