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arXiv · 2311.06675

Dilepton production at next-to-leading order and intermediate invariant-mass observables

Jessica Churchill·Lipei Du·Charles Gale·Greg Jackson·Sangyong Jeon
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Abstract

The thermal QCD dilepton production rate is calculated at next-to-leading order in the strong coupling and at finite baryon chemical potential. The two-loop virtual photon self-energy is evaluated using finite temperature field theory and combined consistently with the self-energy in the Landau-Pomeranchuk-Migdal regime. We present new results for a dense baryonic plasma. The rates are then integrated using (3+1)-dimensional fluid-dynamical simulations calibrated to reproduce hadronic experimental results obtained at RHIC at energies ranging from those of the Beam Energy Scan to $\sqrt{s_{_{\rm NN}}} = 200$ GeV. We elaborate on the ability for dileptons to relay information about the plasma baryonic content and temperature.

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Jessica Churchill, Lipei Du, Charles Gale, Greg Jackson, Sangyong Jeon. 2023-11-11. Dilepton production at next-to-leading order and intermediate invariant-mass observables. https://doi.org/10.1103/physrevc.109.044915

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