Phenomenological implications of light stop and higgsinos

Abstract

We examine the phenomenological implications of light ${\tilde{t}}_R$ and higgsinos in the Minimal Supersymmetric Standard Model, assuming ${\tan }^2\beta <m_t/m_b$ and heavy ${\tilde{t}}_L$ and gauginos. In this simplified setting, we study the contributions to $\Delta m_{B_d}$, ${\epsilon }_K$, $BR(b\to s\gamma )$, $R_b\equiv \Gamma (Z\to b\overline{b})/\Gamma (Z\to \mathrm{hadrons})$, $BR(t\to bW)$, and their interplay.

plain LATEX, 6 figures, 23 A4 pages

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