Partial Gauge Symmetry Breaking via Bare Mass

TL;DR

This paper explores how introducing bare mass terms for gauginos and squarks in supersymmetric gauge models on a compactified space can lead to different gauge symmetry breaking patterns, including partial breaking.

Contribution

It demonstrates an alternative mechanism to Scherk-Schwarz for gauge symmetry breaking using bare mass terms, with explicit examples showing varied breaking patterns.

Findings

Different gauge symmetry breaking patterns depend on bare mass magnitude

Partial breaking from SU(3) to SU(2)×U(1) is achieved

Bare mass terms can replace Scherk-Schwarz mechanism for symmetry breaking

Abstract

We study gauge symmetry breaking patterns in supersymmetric gauge models defined on $M^4\times S^1$. Instead of utilizing the Scherk-Schwarz mechanism, supersymmetry is broken by bare mass terms for gaugino and squarks. Though the matter content is the same, depending on the magnitude of the bare mass, the gauge symmetry breaking patterns are different. We present two examples, in one of which the partial gauge symmetry breaking $SU(3)\to SU(2)\times U(1)$ is realized.