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A Light Bottom Squark in the MSSM

A. Dedes, H. K. Dreiner

hep-pharXiv:hep-ph/0009001

Abstract

We study the compatibility of a light bottom squark M b< O(10 GeV) in the unconstrained MSSM. We consider the one-loop radiative corrections which are large for a heavy gluino (> O(150 GeV)). We then consider the renormalization group flow up to the Grand Unified scale. For most regions of the parameter space with a light sbottom we find colour and charge breaking minima. Only a small window in gluino mass and tan(beta) is consistent with all bounds. This is alleviated by a light gluino, which is however only marginally experimentally allowed.

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