Flavor physics at large tanβwith a binolike lightest supersymmetric particle
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Abstract
The minimal supersymmetric extension of the standard model with large $\mathrm{tan}\ensuremath{\beta}$ and heavy squarks (${M}_{\stackrel{\texttildelow{}}{q}}\ensuremath{\gtrsim}1\text{ }\text{ }\mathrm{TeV}$) is a theoretically well-motivated and phenomenologically interesting extension of the standard model. This scenario naturally satisfies all the electroweak precision constraints and, in the case of not too heavy slepton sector (${M}_{\stackrel{\texttildelow{}}{\ensuremath{\ell}}}\ensuremath{\lesssim}0.5\text{ }\text{ }\mathrm{TeV}$), can also easily accommodate the $(g\ensuremath{-}2{)}_{\ensuremath{\mu}}$ anomaly. Within this framework nonstandard effects could possibly be detected in the near future in a few low-energy flavor violating observables, such as $\mathcal{B}(B\ensuremath{\rightarrow}\ensuremath{\tau}\ensuremath{\nu})$, $\mathcal{B}({B}_{s,d}\ensuremath{\rightarrow}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}})$, $\mathcal{B}(B\ensuremath{\rightarrow}{X}_{s}\ensuremath{\gamma})$, and $\mathcal{B}(\ensuremath{\mu}\ensuremath{\rightarrow}e\ensuremath{\gamma})$. Interpreting the $(g\ensuremath{-}2{)}_{\ensuremath{\mu}}$ anomaly as the first hint of this scenario, we analyze the correlations of these low-energy observables under the additional assumption that the relic density of a binolike lightest supersymmetric particle accommodates the observed dark-matter distribution.