Type I Seesaw Mechanism, Lepton Flavour Violation and Higgs Decays

3rd Symposium on Prospects in the Physics of Discrete Symmetries

Molinaro, Emiliano^1

Physik-Department T30d, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany^1

关键词: Electroweak scale;    Higgs Boson decay;    Lepton flavour violations;    Neutrino oscillations;    Parameter spaces;    Seesaw mechanism;    The standard model;    Yukawa couplings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/447/1/012052/pdf
DOI  :  10.1088/1742-6596/447/1/012052

来源: IOP

【 摘 要 】

We review and update the current phenomenological constraints on minimal type I seesaw extensions of the Standard Model in which New Physics content can be probed at the electroweak scale. In this class of models, the flavour structure of the neutrino Yukawa couplings is determined by the requirement of reproducing neutrino oscillation data. The strongest constraints on the seesaw parameter space are imposed by the very recent upper limit on μ → eγ decay rate. Searches of non-standard Higgs boson decays into a light and a heavy neutrino may also provide and independent test of these seesaw scenarios.