2015/02/20 by Ramona Gröber, Margarete Mühlleitner, Grober, Ramona +5
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1502.05935
openalex publication_date 2015/02/20 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
We investigate the decays of the light stop in scenarios with the lightest neutralino χ10 being the lightest supersymmetric particle, including flavour-violating (FV) effects. We analyse the region where the three-body decay t1→ W b χ10 is kinematically allowed and provide a proper description of the transition region between the three-body decay and the four-body decay t1 →χ10 b f f'. The improved treatment has been implemented in the Fortran package \tt SUSY-HIT and is used for the analysis of this region. A scan over the parameter range including all relevant experimental constraints reveals that the FV two-body decay into charm and χ10 can be as important as the three-, respectively, four-body decays if not dominant and therefore should be taken into account in order to complete the experimental searches for the light stop.