2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/189040Average energy loss of light quarks has been calculated in a two stage equilibrium scenario where the quarks are executing Brownian motion in a gluonic heat bath. The evolution of the quark $p_T$ spectra is studied by solving Fokker-Planck equation in an expanding plasma. Results are finally compared with experimentally measured pion $p_T$ spectrum at RHIC.4 pages, 2 figures, typos corrected, Phys. Rev. C in pressHigh Energy Physics - Phenomenologytext