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- Title
Enhanced neutrino polarizability.
- Authors
Bansal, S.; Paz, G.; Petrov, A. A.; Tammaro, M.; Zupan, J.
- Abstract
We point out that neutrinos can have enhanced couplings to photons, if light (pseudo)scalar mediators are present, resulting in a 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 detail 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 an 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.
- Subjects
LEPTON number; NEUTRINO mass; NEUTRINO interactions; NEUTRINOS; BOSONS; PHOTONS
- Publication
Journal of High Energy Physics, 2023, Vol 2023, Issue 5, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP05(2023)142