2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176402We consider the Nuclear Modification Ratios in heavy ion collisions, R_CP and R_AA, in the region of intermediate transverse momentum, and study the dependency upon the constituent quark composition of the observed hadron. Adopting a two component recombination/fragmentation model, validated by experimental information from STAR and PHENIX, we show that a clear distinction is predicted for the f0(980) between the assumptions of $s\bar s$ or diquark-antidiquark content.14 pages, 11 eps figures, added figures and minor corrections, to appear in Phys. Lett. BHigh Energy Physics - PhenomenologyCounting valence quarks at RHIC and LHCtext