# Hybrid Anomaly and Gravity Mediation for Electroweak Supersymmetry

## TL;DR

This paper introduces a hybrid anomaly and gravity mediation model for electroweak supersymmetry, resolving slepton tachyon issues, achieving TeV-scale sparticle masses, and providing a viable mixed axion-wino dark matter candidate with suppressed detection signals.

## Contribution

It presents a novel hybrid mediation framework combining anomaly and gravity mediation, addressing key problems and enabling realistic dark matter and fine-tuning properties.

## Key findings

- Slepton tachyon problem is solved automatically.
- Color sparticles are in the TeV range, beyond current LHC limits.
- Dark matter is a mixed axion-wino candidate with suppressed direct detection cross section.

## Abstract

We propose a hybrid mediation and hybrid supersymmetry breaking. In particular the RG-invariant anomaly mediation is considered. Together with additional gravity mediation the slepton tachyon problem of anomaly mediation is solved automatically. The special properties are that all of color sparticles masses fall into several TeV region due to the large $m_0$ and $m_{32}$ which are well beyond the scope of current LHC Run II limits. Unlike the gauge mediation, the dark matter candidate is still the lightest neutralino and the correct dark matter relic density can be realized within the framework of mixed axion-wino dark matter. Due to the existence of multi-component of axion-wino dark matter, the direct detection cross section is suppressed to evade the tightest LUX, PandaX bound. Furthermore the fine-tuning is under control when the single scale supersymmetry breaking mechanism is adapted.