Probing SUSY CP violation in two-body stop decays at the LHC

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Published 25 September 2009 Published under licence by IOP Publishing Ltd
, , Citation Frank F. Deppisch and Olaf Kittel JHEP09(2009)110 DOI 10.1088/1126-6708/2009/09/110

1126-6708/2009/09/110

Abstract

We study CP asymmetries in two-body decays of top squarks into neutralinos and sleptons at the LHC. These asymmetries are used to probe the CP phases possibly present in the stop and neutralino sector of the Minimal Supersymmetric Standard Model. Taking into account bounds from experimental electric dipole moment searches, we identify areas in the mSUGRA parameter space where CP asymmetries can be sizeable and discuss the feasibility of their observation at the LHC. As a result, potentially detectable CP asymmetries in stop decays at the LHC are found, motivating further detailed experimental studies for probing SUSY CP phases.

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10.1088/1126-6708/2009/09/110