Neutrino mass models: New classification and model-independent upper limits on their scale

Abstract

We propose a model-independent framework to classify and study neutrino mass models and their phenomenology. The idea is to introduce one particle beyond the Standard Model which couples to leptons and carries lepton number together with an operator which violates lepton number by two units and contains this particle. This allows to study processes which do not violate lepton number, while still working with an effective field theory. The contribution to neutrino masses translates to a robust upper bound on the mass of the new particle. We compare it to the stronger but less robust upper bound from Higgs naturalness and discuss several lower bounds. Our framework allows to classify neutrino mass models in \emph{just} 20 categories, further reduced to 14 once nucleon decay limits are taken into account, and \emph{possibly} to 9 if also Higgs naturalness considerations and direct searches are considered.

10 pages, 1 table, 1 figure; title changed, discussions extended, figure updated, matches published version in EPJC

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• Low energy effects of neutrino masses
• Unitarity of the Leptonic Mixing Matrix
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• Testing Radiative Neutrino Mass Models at the LHC
• Recipes and Ingredients for Neutrino Mass at Loop Level
• Neutrino Masses, Grand Unification, and Baryon Number Violation
• Search for nucleon decay into charged antilepton plus meson in 0.316 megaton$\cdot$years exposure of the Super-Kamiokande water Cherenkov detector
• One-loop renormalization group equations of the neutrino mass matrix in the triplet seesaw model
• Search for evidence of the type-III seesaw mechanism in multilepton final states in proton-proton collisions at sqrt(s) = 13 TeV
• Master Majorana neutrino mass parametrization
• Master Majorana neutrino mass parametrization
• Lepton FCNC in Type III Seesaw Model

Cited by in corpus (12)

• Effective Theory of Freeze-in Dark Matter
• Broken Scaling Neutrino Mass Matrix and Leptogenesis based on A${}_4$ Modular invariance
• Exploding operators for Majorana neutrino masses and beyond
• Constraints on anomalous quartic gauge couplings via $W\gamma jj$ production at the LHC
• An EFT approach to baryon number violation: lower limits on the new physics scale and correlations between nucleon decay modes
• The Singly-Charged Scalar Singlet as the Origin of Neutrino Masses
• Neutrino masses from new Weinberg-like operators: Phenomenology of TeV scalar multiplets
• Neutrino masses from new seesaw models: Low-scale variants and phenomenological implications
• Probing charged lepton number violation via ${\ell }^{\pm }{\ell }^{\prime \pm }{W}^{\mp }{W}^{\mp }$
• Dimension-5 baryon-number violation in low-scale Pati-Salam
• Electroweak baryogenesis in the three-loop neutrino mass model with dark matter
• Majorana phases in high-scale mixings unification hypotheses