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 ${\mu }_{\mathrm{B}}=0$).

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