Probing New Physics Signals with Symmetry-Restored Yukawa Textures

Abstract

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 $U_Q(1{)}^3\times U_L(1{)}^3$ 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 $R_{K^{(\ast )}}$ and $R_{D^{(\ast )}}$. Specifically, two atmospheric-scale neutrino masses are generated by a low-scale seesaw mechanism, while the much lighter one, being of $\mathcal{O}(10^{-6})\mathrm{eV}$, is fixed by a $7.1\mathrm{keV}$ 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 $R_{K^{(\ast )}}$ and the $R_{D^{(\ast )}}$ anomalies, respectively. As a further application, a milder discrepancy of the muon $g-2$ is observed, which has also been implied by the recently refined lattice results.

arXiv comment9 pages, 3 figures; formulation of the model refined, and several references added, final version published in the journal

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Cited by in corpus (8)

• Power-aligned 2HDM: a correlative perspective on $(g-2{)}_{e,\mu }$
• Simple model for large CP violation in charm decays, B-physics anomalies, muon g-2, and Dark Matter
• Revisiting Generalized Two Higgs Doublet Model in the Light of Muon Anomaly and Lepton Flavor Violating Decays at HL-LHC
• Systematic approach to $B$-physics anomalies and $t$-channel dark matter
• Effective neutrino number shift from keV-vacuum neutrinophilic 2HDM
• Linking the $R_{K^{(\ast )}}$ anomalies to the Hubble tension via a single right-handed neutrino
• TeV-scale vector leptoquark from Pati-Salam unification with vectorlike families
• Perturbative unitarity constraints on generic Yukawa interactions