https://doi.org/10.1140/epjc/s10052-020-7839-4
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: xqli@mail.ccnu.edu.cn
Received:
17
December
2019
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
