Natural electroweak symmetry breaking in generalised mirror matter models

Abstract

It has recently been pointed out that the mirror or twin Higgs model is more technically natural than the standard model, thus alleviating the ``little'' hierarchy problem. In this paper we generalise the analysis to models with an arbitrary number of isomorphic standard model sectors, and demonstrate that technical naturalness increases with the number of additional sectors. We consider two kinds of models. The first has $N$ standard model sectors symmetric under arbitrary permutations thereof. The second has $p$ left-chiral standard model sectors and $p$ right-chiral or mirror standard model sectors, with $p$-fold permutation symmetries within both and a discrete parity transformation interchanging left and right. In both kinds of models the lightest scalar has an invisible width fraction 1/N, which will provide an important means of experimentally testing this class of models.

about 8 pages

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• Ultralight bosons for strong gravity applications from simple Standard Model extensions
• Comprehensive asymmetric dark matter model
• Single production of the top partners at high energy colliders
• Neutrinos and Lepton Flavour Violation in the Left-Right Twin Higgs Model
• Can A Pseudo-Nambu-Goldstone Higgs Lead To Symmetry Non-Restoration?
• Top quark forward-backward asymmetry and charge asymmetry in left-right twin Higgs model
• Dark matter and Higgs phenomenology predicted by left-right twin Higgs model in light of CDMS II results
• Broken Symmetry as a Stabilizing Remnant
• Higgs boson production and decay at $e^{+}{e}^{-}$ colliders as a probe of the Left-Right twin Higgs model
• Left-right twin Higgs model confronted with the latest LHC Higgs data
• A New Left-Right Symmetry Model
• Production and decays of a light ${\varphi }^0$ in the LRTH model under the LHC Higgs data
• Resolution of the small scale structure issues with dissipative dark matter from multiple Standard Model sectors
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• Review of Neutral Naturalness
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