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arXiv · 1011.2449

Testing the CP-violating MSSM in stau decays at the LHC and ILC

Herbi Dreiner·Olaf Kittel·Suchita Kulkarni·Anja Marold
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Abstract

We study CP violation in the two-body decay of a scalar tau into a neutralino and a tau, which should be probed at the LHC and ILC. From the normal tau polarization, a CP asymmetry is defined which is sensitive to the CP phases of the trilinear scalar coupling parameter $A_\tau$, the gaugino mass parameter $M_1$, and the higgsino mass parameter $\mu$ in the stau-neutralino sector of the Minimal Supersymmetric Standard Model. Asymmetries of more than 70% are obtained in scenarios with strong stau mixing. As a result, detectable CP asymmetries in stau decays at the LHC are found, motivating further detailed experimental studies for probing the SUSY CP phases.

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Herbi Dreiner, Olaf Kittel, Suchita Kulkarni, Anja Marold. 2010-11-10. Testing the CP-violating MSSM in stau decays at the LHC and ILC. https://doi.org/10.1103/physrevd.83.095012

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