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Radiative type-I seesaw neutrino masses

AuthorsArbeláez, Carolina ; Cárcamo Hernández, A.E.; Cepedello, R.; Hirsch, Martin ; Kovalenko, Sergey.
Issue DateDec-2019
PublisherAmerican Physical Society
CitationPhysical Review D 100 (11): 115021 (2019)
AbstractWe discuss a radiative type-I seesaw. In these models, the radiative generation of Dirac neutrino masses allows to explain the smallness of the observed neutrino mass scale for rather light right-handed neutrino masses in a type-I seesaw. We first present the general idea in a model-independent way. This allows us to estimate the typical scale of right-handed neutrino mass as a function of the number of loops. We then present two example models, at the one- A nd two-loop level, which we use to discuss neutrino masses and lepton-flavor-violating constraints in more detail. For the two-loop example, right-handed neutrino masses must lie below 100 GeV, thus making this class of models testable in heavy neutral lepton searches.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.100.115021
Identifiersdoi: 10.1103/PhysRevD.100.115021
issn: 2470-0029
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