The Beauty of SUSY

Abstract

B physics represents a privileged place to look for supersymmetry (SUSY) through its virtual effects. Here we discuss rare B decays ($b\to s\gamma$, $b\to sg$, $b\to s{l}^{+}{l}^{-}$) and $B-\bar{B}$ oscillations in the context of low-energy SUSY. We outline the variety of predictions that arise according to the choice of the SUSY extension ranging from what we call the ``minimal" version of the MSSM to models without flavour universality or with broken R-parity. In particular, we provide a model-independent parameterization of the SUSY FCNC effects which is useful in tackling the problem in generic low-energy SUSY. We show how rare B physics may be complementary to direct SUSY searches at colliders, in particular for what concerns extensions of the most restrictive version of the MSSM.

Comments: 14 pages, LaTeX, 1 Postscript figure included. Talk given by A. Masiero at BEAUTY96, Rome, Italy, June 1996. To appear in the proceedings