Shedding light on thermal photon and dilepton production

Abstract

Electromagnetic radiation from the quark-gluon plasma (QGP) is an important observable to be considered in heavy ion collision experiments. I will provide an update on recent advancements from perturbation theory and quenched lattice simulations. The resummed next-to-leading order (NLO) emission rate has recently been decomposed into transverse and longitudinal components, and extended to non-zero baryon chemical potential. The associated spectral function has also been tested against the Euclidean correlator, for continuum-extrapolated lattice data (at ${\mu }_{\mathrm{B}}=0$).

8 pages, 4 figures. Contribution to proceedings of Confinement XV (1-6 August 2022, Stavanger, Norway)

References in corpus (6)

• Spectral functions at small energies and the electrical conductivity in hot, quenched lattice QCD
• Low Mass Thermal Dilepton Production at NLO in a Weakly Coupled Quark-Gluon Plasma
• Interpolation of hard and soft dilepton rates
• Testing thermal photon and dilepton rates
• Smooth interpolation between thermal Born and LPM rates
• Efficient numerical integration of thermal interaction rates

Cited by in corpus (3)

• Dilepton production at next-to-leading order and intermediate invariant-mass observables
• Virtual Photons Shed Light on the Early Temperature of Dense QCD Matter
• Soft gluon self-energy at finite temperature and density: hard NLO corrections in general covariant gauge