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PreprintCC BY 4.0arXiv

A radiative neutrino mass model with semi-annihilating boosted dark matter

  • Motoko Fujiwara
  • Takashi Toma
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Abstract

Boosted dark matter can provide a distinctive signature of a non-minimal dark sector. In this work, we construct a radiative neutrino mass model that allows for the production of boosted dark matter in the present universe through semi-annihilation. A Dirac fermion serves as the dark matter candidate, which semi-annihilates into an anti-dark matter particle and a neutrino. Taking into account the relevant experimental and theoretical constraints, we find that the boosted dark matter can be probed by DARWIN if its mass lies in the range of 20--50 MeV and the semi-annihilation proceeds through a resonance with a tuning of π’ͺ(0.1)%. Furthermore, the monochromatic neutrino produced simultaneously with the boosted dark matter can also be detected at Hyper-Kamiokande and DUNE in part of the allowed parameter space.

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Cite

BibTeXRIS
BibTeX
@misc{fujiwara2026radiative,
  title = {{A radiative neutrino mass model with semi-annihilating boosted dark matter}},
  author = {Motoko Fujiwara and Takashi Toma},
  howpublished = {arXiv},
  year = {2026},
  month = aug,
  doi = {10.48550/arxiv.2606.02751},
  eprint = {2606.02751},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.02751},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - A radiative neutrino mass model with semi-annihilating boosted dark matter
AU  - Motoko Fujiwara
AU  - Takashi Toma
PY  - 2026
DA  - 2026/08/27
PB  - arXiv
DO  - 10.48550/arxiv.2606.02751
UR  - https://arxiv.org/abs/2606.02751
AB  - Boosted dark matter can provide a distinctive signature of a non-minimal dark sector. In this work, we construct a radiative neutrino mass model that allows for the production of boosted dark matter in the present universe through semi-annihilation. A Dirac fermion serves as the dark matter candidate, which semi-annihilates into an anti-dark matter particle and a neutrino. Taking into account the relevant experimental and theoretical constraints, we find that the boosted dark matter can be probed by DARWIN if its mass lies in the range of 20--50 MeV and the semi-annihilation proceeds through a resonance with a tuning of π’ͺ(0.1)%. Furthermore, the monochromatic neutrino produced simultaneously with the boosted dark matter can also be detected at Hyper-Kamiokande and DUNE in part of the allowed parameter space.
ER  -