D-term assisted Anomaly Mediation in E6 motivated models

TL;DR

This paper explores how E6 GUT motivated D-term contributions can modify anomaly mediated supersymmetry breaking, leading to positive slepton masses and distinctive LHC signatures, as well as unique neutralino dark matter features.

Contribution

It introduces a novel D-term assisted anomaly mediation framework based on E6 GUT models, producing new scalar mass spectra and phenomenological signatures.

Findings

Slepton mass squared can be positive at weak scale due to D-term contributions.

Distinct mass splittings between right-handed and left-handed sfermions are predicted.

Unique neutralino dark matter characteristics are identified.

Abstract

We investigate effects of D-term contributions to the anomaly mediated supersymmetry breaking scenario. If we introduce an E6 GUT motivated D-term, it is possible that slepton mass squared is positive at weak scale even if there are no other D-term contributions. Moreover, as a consequence of additional D-term contributions to scalar masses, we obtain various soft supersymmetry breaking mass spectra, which are different from those obtained in the conventional anomaly mediation scenario. Then there would be a distinct signature of this scenario at the LHC. For example, in several cases, there exist mass splittings between the right-handed sfermion and the left-handed sfermion. We also discuss some characteristic features of the neutralino dark matter in this model.