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arXiv · 2504.21698

Dilepton emission in heavy ion collisions and chemical equilibrium of QCD matter

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

We study thermal dilepton production and anisotropic flow in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02 \, \mathrm{TeV}$ using next-to-leading-order (NLO) thermal QCD dilepton emission rates. A hybrid model (IP-Glasma+\kompost+MUSIC+UrQMD) simulates the collision evolution. The role of the pre-equilibrium stage in dilepton observables is examined. We also explore how chemical equilibrium in QCD matter affect dilepton observables.

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Xiang-Yu Wu, Lipei Du, Charles Gale, Sangyong Jeon. 2025-04-30. Dilepton emission in heavy ion collisions and chemical equilibrium of QCD matter. https://arxiv.org/abs/2504.21698

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