A study of electroweak vacuum metastability with a singlet scalar dark matter

TL;DR

This paper investigates how adding a singlet scalar dark matter candidate affects the stability of the electroweak vacuum within the Standard Model extended up to the Planck scale, using phase diagrams and confidence level analysis.

Contribution

It provides a detailed analysis of electroweak vacuum metastability considering a singlet scalar dark matter, highlighting the impact of new physics parameters on vacuum stability.

Findings

Confidence level varies with new physics parameters.

Phase diagrams illustrate stability regions.

Dark matter candidate influences vacuum metastability.

Abstract

We study several aspects of electroweak vacuum metastability when an extra gauge singlet scalar, a viable candidate for a dark matter particle, is added to the standard model of particle physics, which is assumed to be valid up to the Planck scale. Phase diagrams are drawn for different parameter spaces, and based on that, we graphically demonstrate how the confidence level, at which stability of electroweak vacuum is excluded, depends on such new physics parameters.