Interacting scalar-fermion two-component dark matter in a gauged U(1)B−L model
Abstract
We propose an interacting two-component dark matter model based on a gauged U(1)B−L extension of the Standard Model, which also accommodates neutrino masses through the type-I seesaw mechanism. The dark sector consists of a Dirac fermion χ and a complex scalar S, which can both be stable without imposing an additional discrete symmetry and are directly coupled by a gauge-invariant Yukawa interaction. The resulting conversion, semi-conversion, and semi-annihilation processes lead to a genuinely coupled freeze-out. After imposing collider and dark matter constraints, we identify viable solutions away from the Z' resonance for both mass hierarchies, mS > mχ and mS < mχ. Despite the strong direct-detection constraints, part of the surviving parameter space remains within the reach of next-generation experiments.
Related
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- Self-interacting O(N) scalar dark matter multiplet in a Higgs-portal model with a light scalar mediator
- Strong First-Order Electroweak Phase Transition and Gravitational Waves in a ℤ4 Fermion-Scalar Dark Matter Model
- Freeze-in Asymmetric Dark Matter with a Dual-Role Scalar: CP Violation and Symmetric-Component Depletion
- Symmetric mass generation of interacting chiral fermions on a one-dimensional lattice without fermion doubling
BibTeX
@misc{neto2026interacting,
title = {{Interacting scalar-fermion two-component dark matter in a gauged $\boldsymbolU(1)_B-L$ model}},
author = {Jacinto P. Neto and Farinaldo S. Queiroz and Carlos E. Yaguna},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.00232},
eprint = {2611.00232},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.00232},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Interacting scalar-fermion two-component dark matter in a gauged U(1)_B−L model
AU - Jacinto P. Neto
AU - Farinaldo S. Queiroz
AU - Carlos E. Yaguna
PY - 2026
DA - 2026/11/01
PB - arXiv
DO - 10.48550/arxiv.2611.00232
UR - https://arxiv.org/abs/2611.00232
AB - We propose an interacting two-component dark matter model based on a gauged U(1)_B−L extension of the Standard Model, which also accommodates neutrino masses through the type-I seesaw mechanism. The dark sector consists of a Dirac fermion χ and a complex scalar S, which can both be stable without imposing an additional discrete symmetry and are directly coupled by a gauge-invariant Yukawa interaction. The resulting conversion, semi-conversion, and semi-annihilation processes lead to a genuinely coupled freeze-out. After imposing collider and dark matter constraints, we identify viable solutions away from the Z' resonance for both mass hierarchies, m_S > m_χ and m_S < m_χ. Despite the strong direct-detection constraints, part of the surviving parameter space remains within the reach of next-generation experiments.
ER -