2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/178978The presence of a light b-squark (with mass about 4 GeV) and gluino (with mass about 15 GeV) might explain the observed excess in b-quark production at the Tevatron. Though provocative, this model is not excluded by present data. The light supersymmetric particles can induce large flavor-changing effects in radiative decays of B mesons. We analyse the decays B->X_s gamma and B->X_{sg} in this scenario and derive restrictive bounds on the flavor-changing quark-squark-gluino couplings.14 pages, 3 figures. One reference added. Final version published in Physics Letters BHigh Energy Physics - Phenomenologytext