Neutrino-Antineutrino Conversion from Ultralight Vector Dark Matter
High Energy Physics - Phenomenology
2026-05-11 v1 High Energy Astrophysical Phenomena
High Energy Physics - Experiment
Abstract
We show that Majorana neutrinos convert into antineutrinos in a background of ultralight vector dark matter coupled to lepton number, such as the gauge boson of or with . This effect is suppressed by the small neutrino mass, but the enhancement by long astrophysical baselines can enable future searches for solar and supernova neutrinos to explore uncharted parameter space. For instance, for dark matter, the observation of a supernova neutrino burst at DUNE, Hyper-Kamiokande, and JUNO could probe gauge couplings as small as for dark matter masses of , beyond the capability of other future probes.
Cite
@article{arxiv.2605.06777,
title = {Neutrino-Antineutrino Conversion from Ultralight Vector Dark Matter},
author = {Asher Berlin and Rodolfo Capdevilla and Ting Cheng and Matheus Hostert and Pedro A. N. Machado},
journal= {arXiv preprint arXiv:2605.06777},
year = {2026}
}
Comments
17 pages, 2 figures