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arXiv · 0808.1530

Tan(beta)-enhanced supersymmetric corrections to the anomalous magnetic moment of the muon

Schedar Marchetti·Susanne Mertens·Ulrich Nierste·Dominik Stöckinger
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Abstract

We report on a two-loop supersymmetric contribution to the magnetic moment (g-2)_mu of the muon which is enhanced by two powers of tan(beta). This contribution arises from a shift in the relation between the muon mass and Yukawa coupling and can increase the supersymmetric contribution to (g-2)_mu sizably. As a result, if the currently observed 3 sigma deviation between the experimental and SM theory value of (g-2)_mu is analyzed within the Minimal Supersymmetric Standard Model (MSSM), the derived constraints on the parameter space are modified significantly: If (g-2)_mu is used to determine tan(beta) as a function of the other MSSM parameters, our corrections decrease tan(beta) by roughly 10% for tan(beta)=50.

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Schedar Marchetti, Susanne Mertens, Ulrich Nierste, Dominik Stöckinger. 2008-08-11. Tan(beta)-enhanced supersymmetric corrections to the anomalous magnetic moment of the muon. https://doi.org/10.1103/physrevd.79.013010

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