SUSY Meets Her Twin
Andrey Katz, Alberto Mariotti, Stefan Pokorski, Diego Redigolo, Robert, Ziegler

TL;DR
This paper explores how breaking mirror symmetry in Twin Higgs models, especially in SUSY UV completions, can reduce fine-tuning and produce distinctive collider signatures, with a focus on extended Higgs sectors.
Contribution
It demonstrates that hard symmetry breaking in Twin Higgs models improves naturalness and presents a simple SUSY realization with manageable tuning and heavy superpartners.
Findings
Achieves around 10% tuning in a Twin SUSY model.
Heavy colored superpartners up to 2 TeV.
Discusses collider signatures of extended Higgs sectors.
Abstract
We investigate the general structure of mirror symmetry breaking in the Twin Higgs scenario. We show, using the IR effective theory, that a significant gain in fine tuning can be achieved if the symmetry is broken hardly. We emphasize that weakly coupled UV completions can naturally accommodate this scenario. We analyze SUSY UV completions and present a simple Twin SUSY model with a tuning of around 10% and colored superpartners as heavy as 2 TeV. The collider signatures of general Twin SUSY models are discussed with a focus on the extended Higgs sectors.
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