Neutrino mass, scalar dark matter, and collider signatures in a radiative doublet-triplet model
Abstract
We explore a radiative neutrino mass model based on the topology T4-3-i, which is a one-loop completion of the Weinberg operator. We focus on its T4-3-i-C1 realization, containing an inert scalar doublet, a real scalar triplet, a Majorana fermion triplet, and a Dirac singlet fermion. An exact Z2 symmetry forbids the tree-level type-III term and stabilizes the lightest Z2-odd particle, leaving the one-loop topology as the leading source of neutrino mass. The model accomodate a neutral {\it CP}-even scalar dark matter candidate and predicts a rank two neutrino mass matrix, and thus one neutrino is massless. A combined analysis incorporating theoretical and experimental constraints reveals viable solutions to both neutrino mass orderings, with the inverted ordering predicting larger values of mββ, mβ, and ∑i mi, thereby enhancing its testability through future beta-decay, neutrinoless double beta decay, and cosmological probes. Within the same viable parameter region, the observed dark matter relic abundance is accounted for by annihilation and coannihilation processes, while the electroweak triplet sector gives rise to prompt, displaced, or long-lived particle signatures, offering complementary collider probes to dark matter and low-energy searches.
Related
- Singlet-doublet dark matter induced radiative neutrino mass and TeV scale leptogenesis
- Probing a heavy neutral lepton in a radiative neutrino model at a muon collider
- Light Leptoquarks in a Dark Sector: Scalar Dark Matter, Neutrino Mass, and Collider Signatures
- Displaced tracks as a signal of dark matter co-annihilation: a case study using inert doublet model at e+e- collider
- Probing the Inert Scalar Sector of the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
BibTeX
@misc{bamwidhi2026neutrino,
title = {{Neutrino mass, scalar dark matter, and collider signatures in a radiative doublet-triplet model}},
author = {Isaac Bamwidhi and Mohamed Belfkir and Mohamed Amin Loualidi and Salah Nasri},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.08808},
eprint = {2609.08808},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.08808},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Neutrino mass, scalar dark matter, and collider signatures in a radiative doublet-triplet model
AU - Isaac Bamwidhi
AU - Mohamed Belfkir
AU - Mohamed Amin Loualidi
AU - Salah Nasri
PY - 2026
DA - 2026/09/08
PB - arXiv
DO - 10.48550/arxiv.2609.08808
UR - https://arxiv.org/abs/2609.08808
AB - We explore a radiative neutrino mass model based on the topology T4-3-i, which is a one-loop completion of the Weinberg operator. We focus on its T4-3-i-C1 realization, containing an inert scalar doublet, a real scalar triplet, a Majorana fermion triplet, and a Dirac singlet fermion. An exact Z_2 symmetry forbids the tree-level type-III term and stabilizes the lightest Z_2-odd particle, leaving the one-loop topology as the leading source of neutrino mass. The model accomodate a neutral {\it CP}-even scalar dark matter candidate and predicts a rank two neutrino mass matrix, and thus one neutrino is massless. A combined analysis incorporating theoretical and experimental constraints reveals viable solutions to both neutrino mass orderings, with the inverted ordering predicting larger values of m_ββ, m_β, and ∑_i m_i, thereby enhancing its testability through future beta-decay, neutrinoless double beta decay, and cosmological probes. Within the same viable parameter region, the observed dark matter relic abundance is accounted for by annihilation and coannihilation processes, while the electroweak triplet sector gives rise to prompt, displaced, or long-lived particle signatures, offering complementary collider probes to dark matter and low-energy searches.
ER -