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arXiv · 1608.05713

A Tale of Two Twin Higgses: Addressing Little Hierarchy in Natural 2HDM Framework

Jiang-Hao Yu
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Abstract

In original twin Higgs model, vacuum misalignment between electroweak and new physics scales is realized by adding explicit $\mathbb{Z}_2$ breaking term. Introducing additional twin Higgs could accommodate spontaneous $\mathbb{Z}_2$ breaking, which explains the origin of this misalignment. We introduce a class of two twin Higgs doublet models with most general scalar potential, and discuss general conditions which trigger electroweak and $\mathbb{Z}_2$ symmetry breaking. Various scenarios on realising the vacuum misalignment are systematically discussed in a natural two Higgs double model framework: explicit $\mathbb{Z}_2$ breaking, radiative $\mathbb{Z}_2$ breaking, tadpole-induced $\mathbb{Z}_2$ breaking, and quartic-induced $\mathbb{Z}_2$ breaking. We investigate the Higgs mass spectra and the Higgs phenomenology in these scenarios.

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Jiang-Hao Yu. 2016-08-19. A Tale of Two Twin Higgses: Addressing Little Hierarchy in Natural 2HDM Framework. https://arxiv.org/abs/1608.05713

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