2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197356We present a systematic analysis of the decay B--> X_s + gamma at the leading log within the framework of Supersymmetry without R-parity. We point out some new contributions in the form of bilinear-trilinear combination of R-parity violating (RPV) couplings that are enhanced by large tanbeta. We also improve by a few orders of magnitude, bounds on several combinations of R-parity violating parameters.5 pages latex. Based on talk given by R. Vaidya at the Pran Nath Fest and PASCOS'04 North-Eastern University, Boston. Necessary style files includedHigh Energy Physics - Phenomenologytext