Two-body decays of gluino at full one-loop level in the quark-flavour violating MSSM

Abstract

We study the two-body decays of the gluino at full one-loop level in the Minimal Supersymmetric Standard Model with quark-flavour violation (QFV) in the squark sector. The renormalization is done in the $\overline{\mathrm{DR}}$ scheme. The gluon and photon radiations are included by adding the corresponding three-body decay widths. We discuss the dependence of the gluino decay widths on the QFV parameters. The main dependence stems from the ${\tilde{c}}_R-{\tilde{t}}_R$ mixing in the decays to up-type squarks, and from the ${\tilde{s}}_R-{\tilde{b}}_R$ mixing in the decays to down-type squarks due to the strong constraints from B-physics on the other quark-flavour mixing parameters. The full one-loop corrections to the gluino decay widths are mostly negative and of the order of about -10\%. The QFV part stays small in the total width but can vary up to -8\% for the decay width into the lightest squark. For the corresponding branching ratio the effect is somehow washed out by at least a factor of two. The electroweak corrections can be as large as 35\% of the SUSY QCD corrections.

References in corpus (9)

• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Probing New Physics through B Mixing: Status, Benchmarks and Prospects
• Logarithmically Enhanced Corrections to the Decay Rate and Forward Backward Asymmetry in anti-B --> X(s) l+ l-
• Constraints on B and Higgs Physics in Minimal Low Energy Supersymmetric Models
• Experimental Constraints on Scharm-Stop Flavor Mixing and Implications in Top-quark FCNC Processes
• SUSY induced top quark FCNC decay $t\to ch$ after Run I of LHC
• Rare Top-quark Decays to Higgs boson in MSSM
• Flavour violating squark and gluino decays
• $h^0\to c\bar{c}$ as a test case for quark flavor violation in the MSSM

Cited by in corpus (5)

• Generic calculation of two-body partial decay widths at the full one-loop level
• Imprint of SUSY in radiative B-meson decays
• Correlation between the decays $h^0\to \gamma \gamma /gg$ in the MSSM with quark flavour violation
• Non-minimal flavour violation in $A_4\times SU(5)$ SUSY GUTs with smuon assisted dark matter
• Impact of quark flavor violating SUSY on h(125) decays at future lepton colliders