Abstract
We study parameters of an extension of the Standard Model. The neutrino sector is enlarged by one right-handed singlet field, allowing for the seesaw mechanism type-I, and the Higgs sector contains one additional doublet, which contributes to light neutrino masses through one-loop radiative corrections. Employing an approximation for the effective light neutrino mass matrix we express the masses of the light neutrinos analytically, allowing us to parameterize the Yukawa couplings to neutrinos by the experimental measurements on the neutrino sector and only two free parameters. We focus on a CP-conserving Higgs potential for which we present the allowed ranges of the input parameters and a statistical overview over the possible values of the Yukawa couplings.
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ArXiv ePrint: 1909.00752
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Jurčiukonis, D., Gajdosik, T. & Juodagalvis, A. Seesaw neutrinos with one right-handed singlet field and a second Higgs doublet. J. High Energ. Phys. 2019, 146 (2019). https://doi.org/10.1007/JHEP11(2019)146
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DOI: https://doi.org/10.1007/JHEP11(2019)146