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arXiv · 2211.10165

Accidental symmetries in the scalar potential of the Standard Model extended with two Higgs triplets

Xin Wang·Yilin Wang·Shun Zhou
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Abstract

The two-Higgs-triplet model (2HTM) provides us with an attractive way to simultaneously account for tiny neutrino masses and the observed matter-antimatter asymmetry in our Universe. In this talk, we study the accidental symmetries of the scalar potential in the 2HTM using the bilinear-field formalism. Based on the group-theoretical arguments, we prove that the maximal symmetry group is ${\rm SO(4)}$. We carefully analyze all the subgroups of ${\rm SO(4)}$, and find that there are eight distinct kinds of accidental symmetries in the scalar potential of the 2HTM.

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Xin Wang, Yilin Wang, Shun Zhou. 2022-11-18. Accidental symmetries in the scalar potential of the Standard Model extended with two Higgs triplets. https://arxiv.org/abs/2211.10165

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