1993/09/20 by Marco Aurelio Diaz, Diaz, Marco Aurelio
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9309296
9 pages (plain tex), figures not included, VAND-TH-93-11
arxiv created 1993/09/20 · arxiv updated 2009/11/30
The effect of loops involving charginos with up-type squarks, and gluinos with down-type squarks, on the inclusive decay mode b→ sγ is studied in the context of minimal N=1 Supergravity models with a radiatively broken electroweak symmetry group. It is confirmed that the strong constraints imposed by the CLEO upper bound B(b→ sγ)<5.4× 10-4 on two-Higgs doublets models are much weaker in supersymmetric theories due to partial cancelations from loops involving charginos and up-type squarks. The dependence of the branching ratio and the supersymmetry masses on the top quark mass is explored.