6533b826fe1ef96bd1285229
RESEARCH PRODUCT
Minimal flavor violation in the see-saw portal
Pilar HernándezDaniele BarducciEnrico BertuzzoAndrea Caputosubject
Nuclear and High Energy PhysicsParticle physicsPhysics beyond the Standard ModelFOS: Physical sciences01 natural sciencesHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesEffective field theoryNeutrino Physicslcsh:Nuclear and particle physics. Atomic energy. Radioactivity010306 general physicsPhysics010308 nuclear & particles physicsElectroweak interactionHigh Energy Physics::Phenomenologybeyond standard model; CP violation; neutrino physicsLepton numberStandard Model (mathematical formulation)High Energy Physics - PhenomenologyCP violationBeyond Standard ModelHiggs bosonCP violationlcsh:QC770-798High Energy Physics::ExperimentNeutrinodescription
We consider an extension of the Standard Model with two singlet leptons, with masses in the electroweak range, that induce neutrino masses via the see-saw mechanism, plus a generic new physics sector at a higher scale, $\Lambda$. We apply the minimal flavor violation (MFV) principle to the corresponding Effective Field Theory ($\nu$SMEFT) valid at energy scales $E \ll \Lambda$. We identify the irreducible sources of lepton flavor and lepton number violation at the renormalizable level, and apply the MFV ans\"atz to derive the scaling of the Wilson coefficients of the $\nu$SMEFT operators up to dimension six. We highlight the most important phenomenological consequences of this hypothesis in the rates for exotic Higgs decays, the decay length of the heavy neutrinos, and their production modes at present and future colliders. We also comment on possible astrophysical implications.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-06-01 | Journal of High Energy Physics |