English

Quarkonium polarization in Pb+Pb collisions in the improved color evaporation model

High Energy Physics - Phenomenology 2022-06-01 v2

Abstract

We apply our calculation of direct J/ψJ/\psi production in the improved color evaporation mode at O(αs3){\mathcal O}(\alpha_s^3) in collinear factorization to Pb+Pb collisions. The cold nuclear matter effects of nuclear modifications of the parton densities and intrinsic transverse momentum broadening are included. We find that the polarization is independent of these effects. Our calculations are compared to the Pb+Pb polarization parameters extracted by the ALICE Collaboration at sNN=5.02\sqrt{s_{NN}} = 5.02 TeV.

Keywords

Cite

@article{arxiv.2203.10154,
  title  = {Quarkonium polarization in Pb+Pb collisions in the improved color evaporation model},
  author = {Vincent Cheung and Ramona Vogt},
  journal= {arXiv preprint arXiv:2203.10154},
  year   = {2022}
}