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arXiv · 1902.01001

A variant two-Higgs doublet model with a new Abelian gauge symmetry

Chuan-Ren Chen·Cheng-Wei Chiang·Kuo-Yen Lin
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Abstract

We consider a two-Higgs doublet model extended with a broken Abelian gauge symmetry under which all Standard Model (SM) quarks, fourth generation fermions and a new SM-singlet scalar boson are charged. Such a setup is shown to be able to accommodate the muon anomalous magnetic dipole moment while being consistent with existing constraints of flavor-violating decays of charged leptons and Z boson. The new scalar boson offers a suitable dark matter candidate that interacts with the SM particles via the Higgs portal and the $Z'$ boson associated with the new gauge symmetry. The dark matter direct detection bound is found to impose a strong constraint on the new gauge coupling.

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Chuan-Ren Chen, Cheng-Wei Chiang, Kuo-Yen Lin. 2019-02-04. A variant two-Higgs doublet model with a new Abelian gauge symmetry. https://doi.org/10.1016/j.physletb.2019.05.023

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