Explanations of the Tentative New Physics Anomalies and Dark Matter in the Simple Extension of the Standard Model (SESM)

TL;DR

This paper revisits the SESM model, demonstrating its ability to explain multiple anomalies and dark matter, while analyzing unitarity constraints and exploring the viable parameter space that satisfies experimental bounds.

Contribution

It provides a comprehensive analysis of the SESM, including unitarity constraints and the full scalar potential, to identify parameter regions explaining anomalies and dark matter.

Findings

Identified viable parameter space explaining anomalies and dark matter.

Analyzed unitarity bounds and scalar potential effects.

Discussed additional dark matter annihilation processes.

Abstract

We revisit the Simple Extension of the Standard Model (SESM), which can account for various tentative new physics anomalies and dark matter. The B physics anomalies, muon anomalous magnetic moment, and dark matter can be explained already in SESM. In this work, we study the unitarity constraint on this model and comment the parameter space on the edge of unitarity bounds. Besides, the complete scalar potential is considered which is needed to address the $W$ boson anomaly and more dark matter (co-)annihilation processes are discussed. We perform a systematic study, and find the viable parameter space which can explain these anomalies and evade all the current experimental constraints.