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See-Saw Energy Scale and the LSND Anomaly

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arxiv hep-ph/0501039 v1 pith:AM3IXBZ6 submitted 2005-01-07 hep-ph

Andre de Gouvea This is my paper · ORCID
classification hep-ph
keywords lsndneutrinoanomalymassesmixingscaleactiveadequate
verification ladder T0 review T1 audit T2 compute T3 formal
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The most general, renormalizable Lagrangian that includes massive neutrinos contains ``right-handed neutrino'' Majorana masses of order M. While there are prejudices in favor of M much larger than the weak scale, virtually nothing is known about the magnitude of M. I argue that the LSND anomaly provides, currently, the only experimental hint: M around 1 eV. If this is the case, the LSND mixing angles are functions of the active neutrino masses and mixing and, remarkably, adequate fits to all data can be naturally obtained. I also discuss consequences of this ``eV-seesaw'' for supernova neutrino oscillations, tritium beta-decay, neutrinoless double-beta decay, and cosmology.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A frequentist analysis of three right-handed neutrinos with GAMBIT

    hep-ph 2019-08 conditional novelty 7.0 of 10

    A comprehensive frequentist global fit maps the currently allowed mass and mixing space for three right-handed neutrinos between 60 MeV and 500 GeV and finds no significant new physics.

  2. Probing Solar Heavy Neutrinos with Heliospheric Electrons

    astro-ph.HE 2024-12 conditional novelty 6.0 of 10

    Using Ulysses and SOHO MeV electron data, the authors set the strongest direct upper bound U_e^2 ~ 10^-6 on solar-produced heavy neutral leptons, reaching that value at a mass near 10 MeV.

  3. Sensitivity of Lepton Number Violating Meson Decays in Different Experiments

    hep-ph 2019-08 conditional novelty 5.0 of 10

    For 0.14 to 6 GeV heavy neutrinos, accounting for the parent meson's velocity weakens projected LNV meson decay sensitivities by one to two orders of magnitude at NA62 and SHiP.

  4. Neutrino Masses from the Point of View of Economy and Simplicity

    hep-ph 2019-07 unverdicted novelty 2.0 of 10

    Neutrino masses are unlikely to share the Standard Model origin of other fermion masses, with the Weinberg effective Lagrangian providing the simplest beyond-Standard-Model mechanism for small Majorana masses.

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