Photon production from a quark-gluon plasma at finite baryon chemical potential

We compute the photon production of a QCD plasma at leading order in the strong-coupling with a finite baryon chemical potential. Our approach starts from the real-time formalism of finite-temperature field theory. We identify the class of diagrams contributing at leading order when a finite chemical potential is added and resum them to perform a full treatment of the Landau-Pomeranchuk-Migdal effect similar to the one performed by Arnold, Moore, and Yaffe [J. High Energy Phys. 11 (2001) 057] at zero chemical potential. Our results show that the contribution of $2\ensuremath{\mapsto}3$ and $3\ensuremath{\mapsto}2$ processes grows as the chemical potential grows.