Probing SUSY CP Violation in Two-Body Stop Decays at the LHC

Details Probing SUSY CP Violation in Two-Body Stop Decays at the LHC Probing SUSY CP Violation in Two-Body Stop Decays at the LHC

2009-05-19

arxiv.org/abs/0905.3088v2

JHEP 0909:110,2009; Erratum-ibid.1003 2010:091,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

38 pages, 13 figures, error in Yukawa coupling corrected, revised benchmark scenario and figures, JHEP version

Scientific paper

10.1088/1126-6708/2009/09/110 10

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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