English

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 U(1)BL\text{U}(1)_{B-L} or U(1)LiLj\text{U}(1)_{L_i - L_j} with i,j=e,μ,τi, j = e , \mu, \tau. 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 U(1)BL\text{U}(1)_{B-L} dark matter, the observation of a supernova neutrino burst at DUNE, Hyper-Kamiokande, and JUNO could probe gauge couplings as small as e10321025e^\prime \sim 10^{-32} - 10^{-25} for dark matter masses of mA1022 eV1014 eVm_{A^\prime} \sim 10^{-22} \ \text{eV} - 10^{-14} \ \text{eV}, beyond the capability of other future probes.

Keywords

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

R2 v1 2026-07-01T12:55:57.241Z