The decays gluino -> stop_1 b-quark W and gluino -> stop_1 c-quark and phenomenological implications in supersymmetric theories

Abstract

We show that the decay gluino -> stop_1 b-quark W is important and can even be dominant in the region of parameter space where it is kinematically allowed. We discuss phenomenological implications within the Minimal Supersymmetric Standard Model and models with broken R-parity. We consider the flavour diagonal case as well as a possible mixing between squarks of different generations. In the latter case also the decay gluino -> stop_1 c-quark is potentially important. We show that the decay gluino -> stop_1 b-quark W is sensitive to the stop mixing angle. Furthermore we demonstrate that in scenarios with a higgsino--like LSP the gluino decays mainly into final states containing top quarks or a light stop if allowed by kinematics.

LaTex, 15 pages, 8 figures, uses JHEP3.cls (included), v2, improved discussion of gluino -> stop_1 c-quark, conclusions unchanged, version to appear in JHEP

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Cited by in corpus (7)

• SPheno, a program for calculating supersymmetric spectra, SUSY particle decays and SUSY particle production at e+ e- colliders
• SDECAY: a Fortran code for the decays of the supersymmetric particles in the MSSM
• Impact of squark generation mixing on the search for gluinos at LHC
• Impact of squark generation mixing on the search for squarks decaying into fermions at LHC
• Search for a compressed supersymmetric spectrum with a light Gravitino
• Same-sign trilepton signal for stop quark in the presence of sneutrino dark matter
• Dark matter and Collider signals in supersymmetric $U(1{)}^{\prime }$ models with non-universal $Z^{\prime }$ couplings