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T: Fachverband Teilchenphysik

T 53: Jenseits des Standardmodells (Theorie) 1

T 53.4: Talk

Tuesday, March 25, 2014, 17:30–17:45, P6

Light Stops in the MSSM with Minimal Flavour Violation — Ramona Gröber¹, Margarete Mühlleitner¹, Eva Popenda², and •Alexander Wlotzka¹ — ¹Institute for Theoretical Physics, Karlsruhe Institute of Technology, D-76128 Karlsruhe — ²Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

The search for supersymmetry at the LHC is an ongoing task. As the mixing of left- and right-handed squarks can be large for the stops, one of them can become rather light. If the mass difference of the light stop and the lightest neutralino is sufficiently small, the decay of the stop into a top quark and the neutralino is kinematically suppressed and thereby the detection of the stop becomes more difficult. In this case flavour changing neutral current (FCNC) processes can play an important role.

We present the calculation of the decay width for the decay of the stop into a charm quark and the lightest neutralino in the MSSM with Minimal Flavour Violation, including higher order corrections. In our analysis we additionally consider the 4-body decays of the stop which can compete with the above decay width.