Neutrino masses and magnetic moments of electron and muon in the Zee Model
نویسندگان
چکیده
We explore parameter space in the Zee Model to resolve long-standing tension of electron and muon anomalous magnetic moment (AMM). The model comprises a second Higgs doublet charged singlet at electroweak scale generates Majorana neutrino masses one-loop level; neutral partner $SU(2)_L$ contributes AMM via one loop two-loop corrections. propose two minimal flavor structures that can explain these anomalies while fitting oscillation data. find resides mass range roughly 10-300 GeV or 1-30 GeV, depending on structures. is consistent with constraints from colliders, precision data, lepton violation. To be comprehensive, we examine electric dipole (EDM) region gives sizable contribution EDM simultaneously giving corrections AMM. In addition light scalar, scalars as low 100 induce nonstandard interactions $\varepsilon_{ee}$ large $8\%$, potentially hinting new physics. also investigate projected capability future colliders probe currently allowed both AMMs direct searches $\ell^{+}\ell^{-}\to \ell^{+}\ell^{-}(H \to \ell^{+}\ell^{-})$ channel.
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Can the Zee ansatz for neutrino masses be correct?
Working in the framework of three chiral neutrinos with Majorana masses, we investigate the possibility, first realized in an explicit model by Zee, that the neutrino mass matrix is strictly off-diagonal in the flavor basis, with all its diagonal entries precisely zero. This CP-conserving ansatz leads to two relations among the three mixing angles (θ1, θ2, θ3) and two squared mass differences. ...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2022
ISSN: ['1127-2236', '1126-6708', '1029-8479']
DOI: https://doi.org/10.1007/jhep03(2022)183