Metastable Aspects of Singlet Extended Higgs Models

TL;DR

This paper analyzes the metastable nature of the broken supersymmetric phase in singlet extended Higgs models, exploring implications for vacuum stability and potential decay timelines if such models are confirmed experimentally.

Contribution

It offers a detailed analysis of the metastability and phase structure of the singlet extended SUSY Higgs model, including phase treatment and implications for vacuum decay.

Findings

Broken SUSY phase is metastable with vanishing vacuum energy

Parameters influence the stability and decay time of the false vacuum

Analysis includes phases in the potential and soft Higgs masses

Abstract

It has long been known that the broken supersymmetric (susy) phase of the singlet extended susy higgs model (SESHM) is at best metastable and the ground states of the model have vanishing vacuum energy and are exactly supersymmetric. If the SESHM is confirmed at the Large Hadron Collider (LHC), the numerical values of the parameters of the model have a bearing on key properties of the susy phase and might provide an estimate of the remaining time before a possible decay of our false vacuum. We provide some analysis of the model including a treatment of phases in the potential and soft higgs masses.