The SM extensions with additional light scalar singlet, nonrenormalizable Yukawa interactions and $(g-2)_{\mu}$

TL;DR

This paper explores an extension of the Standard Model with a light scalar singlet and nonrenormalizable interactions to explain the muon g-2 anomaly, also discussing flavor-violating decays and a gauge generalization.

Contribution

It introduces a novel SM extension with a light scalar and nonrenormalizable Yukawa interactions that can account for the muon g-2 anomaly and proposes a gauge generalization with right-handed charges.

Findings

The model can explain the muon g-2 anomaly.

Predicted flavor-violating decays such as tau to mu mu mu.

Proposed a gauge extension with complex scalar singlet.

Abstract

We consider the SM extension with additional light real singlet scalar, right-handed neutrino and nonrenormalizable Yukawa interaction for the first two generations. We show that the proposed model can explain the observed $(g - 2)$ muon anomaly. Phenomenological consequences as flavour violating decays $\tau \rightarrow \mu\mu\mu, \mu \mu e, \mu e e $ are briefly discussed. We also propose the $U_R(1)$ gauge generalization of the SM with complex scalar singlet and nonzero right-handed charges for the first two generations.