Light Stop and the $b\to s\gamma$ Process

Abstract

A constraint from $b\to s\gamma$ process to the minimal supersymmetric standard model is derived in the light stop region where the coupling between the lighter stop and the $Z^0$ boson vanishes due to the left-right mixing of the stop states. It is pointed out that although some region in the parameter space is excluded from this process there remains a large parameter space where the amplitude of the $b\to s\gamma$ is suppressed due to partial cancellation between different diagrams. Stop as light as 20 GeV is still viable from the $b\to s\gamma$ constraint.

13 pages, 4 figures (not included), KEK-TH-365, KEK preprint 93-68

References in corpus (2)

• Can $b\to s\gamma$ Close the Supersymmetric Higgs Production Window?
• Implications of $b\to s\gamma$ decay measurements in testing the MSSM Higgs sector

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