2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/81701We study the dependence of parton energy loss (quenching) on rapidity in ultra-relativistic nuclear collisions at RHIC. This can provides invaluable information on the density of the medium, which should be more dilute going away from mid-rapidity, thereby reducing the effect of quenching. We predict a clear effect at moderate transverse momenta $\sim$ 3 GeV.4 pages, latex, 3 eps figuresNuclear TheoryHigh Energy Physics - Phenomenologytext