Regular Article - Theoretical Physics
Probing new physics signals with symmetry-restored Yukawa textures
Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, Hubei, 430079, People’s Republic of China
* e-mail: firstname.lastname@example.org
Accepted: 12 March 2020
Published online: 25 March 2020
We implement a symmetry violation guideline into a two-Higgs-doublet model embedded with three right-handed neutrinos, and exploit the generic Yukawa structures of the model via a hypothetical symmetry restoration of a global symmetry. We then apply a mass-powered parametrization to construct the phenomenologically motivated Yukawa interactions, which enables us to incorporate correlatively the neutrino mass, dark matter, as well as the lepton-flavor universality violations in and . Specifically, two atmospheric-scale neutrino masses are generated by a low-scale seesaw mechanism, while the much lighter one, being of , is fixed by a sterile neutrino dark matter produced primordially by the freeze-in mechanism. On the other hand, the neutrino and the charged-lepton mass hierarchies encoded in the mass-powered textures can naturally account for the and the anomalies, respectively. As a further application, a milder discrepancy of the muon is observed, which has also been implied by the recently refined lattice results.
© The Author(s), 2020