Rare top quark decays in the minimal R-symmetric supersymmetric standard model

Abstract

The one-loop contributions to the flavor-changing neutral current decays of the top quark into a light quark and a gauge boson or Higgs boson, namely, [Formula: see text], with q being u or c, and V being [Formula: see text], g, or Z, are analyzed in this study within the framework of the minimal R-symmetric supersymmetric standard model. The charginos in this model have been separated into two sets, i.e. [Formula: see text]-chargino and [Formula: see text]-chargino. The numerical results reveal that gluino or [Formula: see text]-chargino predominantly dictate the predictions for BR ([Formula: see text]), while the impact of neutralino or [Formula: see text]-chargino contributions is insignificant. By incorporating the constraints imposed by the squark mixing parameters from [Formula: see text] and [Formula: see text], the theoretical predictions for BR([Formula: see text]) can be significantly augmented to approximately [Formula: see text]. On the other hand, the values of BR([Formula: see text]) are predicted to be at least four orders of magnitude below the current experimental limits.