The Effect of Supersymmetric Particles on b -> s γDecay in Supergravity Models

Details The Effect of Supersymmetric Particles on b -> s γDecay in Supergravity Models The Effect of Supersymmetric Particles on b -> s γDecay in Supergravity Models

1993-09-20

arxiv.org/abs/hep-ph/9309296v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages (plain tex), figures not included, VAND-TH-93-11

Scientific paper

The effect of loops involving charginos with up-type squarks, and gluinos with down-type squarks, on the inclusive decay mode $b\rightarrow s\gamma$ 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 $B(b\rightarrow s\gamma)<5.4\times 10^{-4}$ 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.

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