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Enhanced neutrino polarizability

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arxiv 2210.05706 v2 pith:3V5T7Q34 submitted 2022-10-11 hep-ph hep-ex

Saurabh Bansal , Gil Paz , Alexey Petrov , Michele Tammaro , Jure Zupan This is my paper
classification hep-phhep-ex
keywords neutrinoenhancedpolarizabilitycouplingsgeneratinglightmassesmediator
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abstract

We point out that neutrinos can have enhanced couplings to photons, if light (pseudo)scalar mediators are present, resulting in potentially measurable neutrino polarizability. We show that the expected suppression from small neutrino masses can be compensated by the light mediator mass, generating dimension 7 Rayleigh operators at low scales. We explore the rich phenomenology of such models, computing in details the constraints on the viable parameter space, spanned by the couplings of the mediator to neutrinos and photons. Finally, we build several explicit models that lead to enhanced neutrino polarizability by modifying the inverse see-saw majoron, i.e., the pseudo-Nambu-Goldstone boson of the $U(1)_L$ global lepton number responsible for generating small neutrino masses.

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Cited by 3 Pith papers

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

  1. Enhanced active-sterile neutrino polarizability at the intensity frontier

    hep-ph 2025-12 conditional novelty 7.0 of 10

    A new neutrino-photon interaction involving a sterile neutrino is constrained at NOMAD and MiniBooNE, and a light-mediator realization can fit the MiniBooNE excess.

  2. Searching for neutrino polarizability at DUNE

    hep-ph 2025-08 conditional novelty 5.0 of 10

    DUNE's near detector could probe new parameter space for enhanced neutrino polarizability in light-scalar models, mainly through single-forward-shower events from coherent argon scattering.

  3. Prospects for Exploring Non-Standard Neutrino Properties with Argon-Based CEvNS Experiments

    hep-ph 2025-10 conditional novelty 4.0 of 10

    Argon CEvNS detectors at stopped-pion sources project sin²θW precision near 1%, neutrino magnetic-moment limits near 10⁻⁹ μB, charge-radius limits near 10⁻³² cm², and vector NSI sensitivity at the 10⁻² level.

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