2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48196We investigate the production rate for hard real photons and the collisional energy loss in the quark-gluon plasma away from chemical equilibrium. Applying the Hard-Thermal-Loop resummation scheme away from equilibrium, we can show that Landau damping provides dynamical screening for both fermion and boson exchange present in the two quantities.5 pages RevTeX, 2 figures, remarks for clarification and one reference added, typos correctedHigh Energy Physics - Phenomenologytext