Top Rare Decays t-> cV in the Mirror Twin Higgs Models

TL;DR

This paper investigates rare top quark decays into charm quarks and vector bosons within mirror twin Higgs models, showing potential deviations from the Standard Model that could be experimentally detectable.

Contribution

It analyzes the decay processes t -> cV in mirror twin Higgs models with colorless top partners, highlighting their potential to reveal new physics beyond the Standard Model.

Findings

Branching ratios can significantly differ from Standard Model predictions.

Some parameter spaces allow detectable decay rates.

Constraints on model parameters can be derived from decay measurements.

Abstract

The decay t -> c V (V=\gamma, Z, g) process in the mirror twin Higgs models with the colorless top partners are studied in this paper. We found that the branching ratios of these decays can in some parameter spaces alter the standard model expectations greatly and may be detectable according to the currently precision electroweak measurements. Thus, the constraints on the model parameters may be obtained from the branching fraction of the decay processes, which may serve as a robust detection to this new physics model.