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Light stop decays into Wb x ~ 10 near the kinematic threshold

Gröber, R.; Mühlleitner, M.; Popenda, E.; Wlotzka, A.

We investigate the decays of the light stop in scenarios with the lightest neutralino x~10 being the lightest supersymmetric particle, including flavour-violating (FV) effects. We analyse the region where the three-body decay t~1->;Wb x ~10 is kinematically allowed and provide a proper description of the transition region between the three-body decay and the four-body decay t~1->;Wb x ~10bff'. The improved treatment has been implemented in the Fortran package 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 x~10 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.

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DOI: 10.5445/IR/1000049593
DOI: 10.1016/j.physletb.2015.05.060
Zitationen: 14
Web of Science
Zitationen: 13
Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 0370-2693
KITopen-ID: 1000049593
Erschienen in Physics Letters B
Band 747
Seiten 144-151
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Nachgewiesen in Web of Science
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