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arXiv · 2509.03289

Electromagnetic radiation from Quark-Gluon Plasma at finite baryon density

Xiang-Yu Wu·Charles Gale·Sangyong Jeon·Jean-François Paquet·Björn Schenke·Chun Shen
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Abstract

Using the Bayesian calibrated iEBE-MUSIC framework, we compute the production of electromagnetic radiation from hot hadronic matter at finite baryon density. Results for thermal photon and thermal dilepton yields are obtained by folding in-medium emission rates with posterior-sampled backgrounds evolved hydrodynamically. We consider different photon sources and analyze the collision-energy dependence of the thermal-to-prompt photon ratio. The sensitivity of the dilepton spectra to the pre-equilibrium stage is explored by considering different initialization procedures. Finally, we examine the impact on dilepton spectra of choosing parameter sets stemming from different Bayesian data analyses.

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Xiang-Yu Wu, Charles Gale, Sangyong Jeon, Jean-François Paquet, Björn Schenke, Chun Shen. 2025-09-03. Electromagnetic radiation from Quark-Gluon Plasma at finite baryon density. https://arxiv.org/abs/2509.03289

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