The $\mu\to e\gamma$ decay in an EW-scale non-sterile RH neutrino model

TL;DR

This paper investigates the $$ decay within an extended electroweak model featuring non-sterile right-handed neutrinos at the EW scale, deriving branching ratios and experimental constraints.

Contribution

It introduces a model with mirror fermions and calculates the $$ decay rate at one-loop, linking low-energy phenomenology with EW-scale RH neutrinos.

Findings

Derived branching ratios for $$ decay.

Set constraints on model parameters from current data.

Predicted experimental sensitivities for future searches.

Abstract

We study in this research the phenomenology of $\mu\to e\gamma$ decay in a scenario of the class of extended models with non-sterile right-handed (RH) neutrino at electroweak (EW) scale proposed by P.Q. Hung. Field content of the standard model (SM) is enlarged by introducing for each SM fermion a corresponding mirror partner with the same quantum numbers beside opposite chirality. Light neutrino masses are generated via the type-I see-saw mechanism and it is also proved to be relevant with low energy within the EW scale of the RH neutrino masses. We introduce the model and derive branching ratio of the $\mu\to e\gamma$ decay at one-loop approximation with the participation of W gauge boson, neutral and singly charged Higgs scalars. After that we set constraints on relevant parameters and predict the sensitivities of the decay channel under the present and future experiments.