2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43046We present the complete calculation of the transverse momentum distribution for the decay b-> s gamma. The contributions of the leading operator O_7 are computed: infrared logarithms are resummed with next-to-leading accuracy according to usual techniques of resummation. Non logarithmic terms are evaluated to O(alpha_S) by calculating one loop diagrams.Talk given at "XV IFAE: Incontri sulla Fisica delle Alte Energie", Lecce, Italy, 23-26 April 2003, 4 pagesHigh Energy Physics - Phenomenologytext