PreprintCC BY 4.0arXiv
FIMP dark matter in the scotogenic model at low-reheating temperatures
Abstract
The scotogenic model offers an attractive framework that explains light neutrino masses while accommodating a viable dark matter candidate. In this work, we study the phenomenology of singlet fermion dark matter, N1, produced via the freeze-in mechanism characterized by an instantaneous low reheating temperature, Trh. We explore the model's viable parameter space, incorporating current bounds from lepton flavor violation (μ→ e γ) and direct detection limits. We show that low-reheating scenarios significantly reshape the viable region for N1 dark matter, improving prospects for testing the scotogenic model in the FIMP scenario while keeping it consistent with current lepton flavor violation and cosmological bounds.
Related
- From Dirac Neutrino Mass to Dark Radiation: An A4-Symmetric FIMP Dark Matter Framework
- From Kination to Detection: Scotogenic Scalar Dark Matter
- Multi-component Dark Matter in a Novel Three-Loop Inverse Scotogenic Seesaw Model
- Probing Ultra-Compressed Scotogenic Dark Matter at the HL-LHC via 4D Spacetime Tracking
- Probing the singlet-triplet scotogenic model with lepton flavor violation, gravitational waves and dark matter
BibTeX
@misc{longas2026fimp,
title = {{FIMP dark matter in the scotogenic model at low-reheating temperatures}},
author = {Robinson Longas and Andrés Rivera and David Suarez},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.21196},
eprint = {2609.21196},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.21196},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - FIMP dark matter in the scotogenic model at low-reheating temperatures
AU - Robinson Longas
AU - Andrés Rivera
AU - David Suarez
PY - 2026
DA - 2026/09/18
PB - arXiv
DO - 10.48550/arxiv.2609.21196
UR - https://arxiv.org/abs/2609.21196
AB - The scotogenic model offers an attractive framework that explains light neutrino masses while accommodating a viable dark matter candidate. In this work, we study the phenomenology of singlet fermion dark matter, N_1, produced via the freeze-in mechanism characterized by an instantaneous low reheating temperature, T_rh. We explore the model's viable parameter space, incorporating current bounds from lepton flavor violation (μ→ e γ) and direct detection limits. We show that low-reheating scenarios significantly reshape the viable region for N_1 dark matter, improving prospects for testing the scotogenic model in the FIMP scenario while keeping it consistent with current lepton flavor violation and cosmological bounds.
ER -