Light Leptoquarks in a Dark Sector: Scalar Dark Matter, Neutrino Mass, and Collider Signatures
Abstract
We investigate the dark matter (DM) phenomenology and subsequent collider signatures of a dark leptoquark (LQ) model containing dark vector-like quarks (VLQs) and a scalar singlet. The dark LQs and VLQs participate in the radiative generation of Majorana neutrino masses at one loop. Since the coloured LQs and VLQs cannot serve as viable DM candidates, a ℤ2-odd singlet scalar is introduced as the DM candidate. The ℤ2-odd nature of the LQs forbids their conventional decays into a quark and a lepton, allowing them to evade the standard LHC constraints that apply to visible LQ signatures. This framework therefore offers the distinctive possibility of sub-TeV dark LQs coexisting with TeV-scale dark VLQs. These sub-TeV dark LQs help in achieving the observed relic abundance of the singlet through co-annihilation. We analyse the resulting DM phenomenology and assess the prospects for probing this scenario at a future muon collider.
Related
- Neutrino mass, scalar dark matter, and collider signatures in a radiative doublet-triplet model
- Probing the Inert Scalar Sector of the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
- Search for scalar leptoquarks produced via muon-quark scattering in proton-proton collisions at √s = 13 TeV
- FCC-μe: High Energy, High Luminosity Muon-Electron Collider & Neutrino Factory at CERN
- Neutrino Tridents and W-boson production at the Muon Collider
BibTeX
@misc{bandyopadhyay2026light,
title = {{Light Leptoquarks in a Dark Sector: Scalar Dark Matter, Neutrino Mass, and Collider Signatures}},
author = {Priyotosh Bandyopadhyay and Kirtiman Ghosh and Anirban Karan and Snehashis Parashar and Debabrata Sahoo},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.03648},
eprint = {2609.03648},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.03648},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Light Leptoquarks in a Dark Sector: Scalar Dark Matter, Neutrino Mass, and Collider Signatures
AU - Priyotosh Bandyopadhyay
AU - Kirtiman Ghosh
AU - Anirban Karan
AU - Snehashis Parashar
AU - Debabrata Sahoo
PY - 2026
DA - 2026/09/03
PB - arXiv
DO - 10.48550/arxiv.2609.03648
UR - https://arxiv.org/abs/2609.03648
AB - We investigate the dark matter (DM) phenomenology and subsequent collider signatures of a dark leptoquark (LQ) model containing dark vector-like quarks (VLQs) and a scalar singlet. The dark LQs and VLQs participate in the radiative generation of Majorana neutrino masses at one loop. Since the coloured LQs and VLQs cannot serve as viable DM candidates, a ℤ_2-odd singlet scalar is introduced as the DM candidate. The ℤ_2-odd nature of the LQs forbids their conventional decays into a quark and a lepton, allowing them to evade the standard LHC constraints that apply to visible LQ signatures. This framework therefore offers the distinctive possibility of sub-TeV dark LQs coexisting with TeV-scale dark VLQs. These sub-TeV dark LQs help in achieving the observed relic abundance of the singlet through co-annihilation. We analyse the resulting DM phenomenology and assess the prospects for probing this scenario at a future muon collider.
ER -