2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176869With the experimental data from STAR, PHENIX and BRAHMS on the centrality and rapidity dependence of the $p_T$ spectrum in Au+Au and d+Au collisions, we show that there exists a scaling distribution which is independent of the colliding system, centrality and rapidity. The parameter for the average transverse momentum $<p_T>$ increases from peripheral to central d+Au collisions. This increase accounts for the enhancement of particle production in those collisions. A non-extensive entropy is used to derive the scaling function.4 pages in RevTeX, 6 figures included, accepted for publication in Phys. Rev. CNuclear Theorytext