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arXiv · hep-ph/9307249

Light Stop and the $b\rightarrow sγ$ Process

Yasuhiro Okada
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Abstract

A constraint from $b\rightarrow sγ$ 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 $b\rightarrow sγ$ is suppressed due to partial cancellation between different diagrams. Stop as light as 20 GeV is still viable from the $b\rightarrow sγ$ constraint.

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Yasuhiro Okada. 1993-07-12. Light Stop and the $b\rightarrow sγ$ Process. https://doi.org/10.1016/0370-2693(93)90167-g

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