Supersymmetry Breaking in a Minimal Anomalous Extension of the MSSM

TL;DR

This paper explores a novel supersymmetry breaking mechanism within a minimal anomalous extension of the MSSM, incorporating Green-Schwarz anomaly cancellation and non-perturbative effects on the $$-term, with implications for phenomenology.

Contribution

It introduces a new supersymmetry breaking framework in an anomalous MSSM extension with Green-Schwarz anomaly cancellation and non-perturbative $$-term effects.

Findings

Soft supersymmetry breaking terms are derived within this framework.

Phenomenological constraints influence the model's parameter space.

The model connects anomaly cancellation with supersymmetry breaking mechanisms.

Abstract

We study a supersymmetry breaking mechanism in the context of a minimal anomalous extension of the MSSM. The anomaly cancellation mechanism is achieved through suitable counterterms in the effective action, i.e. Green-Schwarz terms. We assume that the standard MSSM superpotential is perturbatively realized, i.e. all terms allowed by gauge symmetries, except for the $\mu$-term which has a non-perturbative origin. The presence of this term is expected in many intersecting D-brane models which can be considered as the ultraviolet completion of our model. We show how soft supersymmetry breaking terms arise in this framework and we study the effect of some phenomenological constraints on this scenario.