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arXiv · 2106.13010

Peccei-Quinn symmetry with residual symmetries

Pei-Hong Gu
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Abstract

So far the null results from axion searches have enforced a huge hierarchy between the Peccei-Quinn and electroweak symmetry breaking scales. Then the inevitable Higgs portal poses a large fine tuning on the standard model Higgs scalar. Now we find if the Peccei-Quinn global symmetry has a set of residually discrete symmetries, these global and discrete symmetries can achieve a chain breaking at low scales such as the accessible TeV scale. This novel mechanism can accommodate some new phenomena including a sizable coupling of the standard model Higgs boson to the axion.

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Pei-Hong Gu. 2021-06-24. Peccei-Quinn symmetry with residual symmetries. https://arxiv.org/abs/2106.13010

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