Twin stau as a self-interacting dark matter

TL;DR

This paper proposes twin stau as a viable self-interacting dark matter candidate within supersymmetric Twin Higgs models, highlighting its properties, relic abundance, and potential detectability in future experiments.

Contribution

It introduces twin stau as a novel dark matter candidate in Twin Higgs models, analyzing its relic abundance and experimental prospects.

Findings

Twin stau mass range between 300 and 500 GeV for correct relic abundance.

Twin stau can evade current bounds due to large supersymmetry breaking masses.

Future experiments like Lux-Zepelin can probe this dark matter candidate.

Abstract

Supersymmetric Twin Higgs models allow for reducing the fine-tuning with respect to Minimal Supersymmetric Standard Model by protecting the mass of the Higgs boson by additional, accidental global symmetry. This class of models introduce numerous new states, some of which might be candidates for dark matter. Since those reside in twin sector, they are not charged under Standard Model gauge group. We proposed twin stau as a candidate for dark matter. Even though twin stau is charged under twin electromagnetism, since supersymmetric partners obtain large masses from supersymmetry breaking they can easily escape bounds for self-interacting dark matter. The mass of twin stau which reproduces correct relic abundance is usually between 300 and 500 GeV. This scenario can be probed by future direct detection experiments such as Lux-Zepelin.