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arXiv · 2407.04156

Probing the equilibration of the QCD matter created in heavy-ion collisions with dileptons

Xiang-Yu Wu·Lipei Du·Charles Gale·Sangyong Jeon
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Abstract

A systematic study of intermediate invariant mass dilepton production in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV is performed, using next-to-leading-order (NLO) thermal QCD dilepton emission rates with a multistage dynamical approach which includes event-by-event IP-Glasma initial conditions, relativistic viscous fluid dynamics, and a hadronic afterburner. Considering dilepton yield and anisotropic flow, special attention is paid to the out-of-equilibrium aspects, both thermal and chemical, and to the contribution of the Drell-Yan process. The relative contribution of each of those different channels to dilepton observables is calculated and discussed.

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Xiang-Yu Wu, Lipei Du, Charles Gale, Sangyong Jeon. 2024-07-04. Probing the equilibration of the QCD matter created in heavy-ion collisions with dileptons. https://arxiv.org/abs/2407.04156

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