Higgs lepton flavour violation: UV completions and connection to neutrino masses
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Higgs lepton flavour violation: UV completions and connection to neutrino masses

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Higgs lepton flavour violation: UV completions and connection to neutrino masses

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Herrero García, Juan Andrés; Rius Dionis, Nuria Perfil; Santamaria, Arcadi Perfil
Aquest document és un/a article, creat/da en: 2016
We study lepton violating Higgs (HLFV) decays, first from the effective field theory (EFT) point of view, and then analysing the different high-energy realizations of the operators of the EFT, highlighting the most promising models. We argue why two Higgs doublet models can have a BR(h → τ μ) ∼ 0.01, and why this rate is suppressed in all other realizations including vector-like leptons. We further discuss HLFV in the context of neutrino mass models: in most cases it is generated at one loop giving always BR(h → τ μ) < 10−4 and typically much less, which is beyond experimental reach. However, both the Zee model and extended left-right symmetric models contain extra SU(2) doublets coupled to leptons and could in principle account for the observed excess, with interesting connections between HLFV and neutrino parameters.

    Herrero García, Juan Andrés; Rius Dionis, Nuria; Santamaria, Arcadi (2016) Higgs lepton flavour violation: UV completions and connection to neutrino masses The Journal of high energy physics 11 11 084 - 1 084 - 45
https://doi.org/10.1007/JHEP11(2016)084
distribuït sota llicència Creative Commons de Reconeixement-NoComercial 3.0 No adaptada

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