Light Mediators at the Neutrino-Dark Matter Frontier: Coherent Scattering, Precision Constraints, and Complementary Searches
Abstract
Low-threshold neutrino and dark-matter experiments constrain light mediators through different momentum transfers, targets, and coupling combinations. We examine scalar and vector interactions in coherent neutrino--nucleus scattering, neutrino--electron scattering, and dark-matter direct detection. Three representative interaction models are used to compare recoil spectra and coupling degeneracies. For 73Ge and 131Xe, the nuclear-charge response matrix has a condition number of approximately 115, so two different targets may still leave nearly parallel blind directions. An analytic profile-likelihood calculation shows how spectral overlap and uncertainties in neutrino interactions affect dark-matter discovery sensitivity in the neutrino fog. We discuss the implications of measurements from COHERENT, CONUS+, LZ, XENONnT, and PandaX-4T and specify which theoretical inputs, detector responses, and statistical correlations are needed to combine their constraints. keyword : coherent elastic neutrino-nucleus scattering; light mediators; neutrino--electron scattering; dark matter direct detection; non-standard interactions; solar neutrinos; complementarity
Related
- Solar Neutrino Constraints on Inelastic Dark Matter Scattering in Light of Recent LUX-ZEPLIN Observations
- High resolution Lyman-α forest constraints on dark matter-neutrino scattering
- SN1987A constraints on the neutrino-dark-fermion interaction from resonant scattering with CνB
- Flavor Tomography of Long-Lived Neutrino-Mass Mediators: Probing the Neutrino Mass Ordering at the HL-LHC
- Complementary probes of bilinear R-parity violating SUSY models with a winolike LSP via neutrino oscillations and at the LHC
BibTeX
@misc{serao2026light,
title = {{Light Mediators at the Neutrino-Dark Matter Frontier: Coherent Scattering, Precision Constraints, and Complementary Searches}},
author = {Raoul Serao and Mohamed Ouchemhou},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.04600},
eprint = {2611.04600},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.04600},
}
RIS
TY - UNPB
TI - Light Mediators at the Neutrino-Dark Matter Frontier: Coherent Scattering, Precision Constraints, and Complementary Searches
AU - Raoul Serao
AU - Mohamed Ouchemhou
PY - 2026
DA - 2026/11/03
PB - arXiv
DO - 10.48550/arxiv.2611.04600
UR - https://arxiv.org/abs/2611.04600
AB - Low-threshold neutrino and dark-matter experiments constrain light mediators through different momentum transfers, targets, and coupling combinations. We examine scalar and vector interactions in coherent neutrino--nucleus scattering, neutrino--electron scattering, and dark-matter direct detection. Three representative interaction models are used to compare recoil spectra and coupling degeneracies. For ^73Ge and ^131Xe, the nuclear-charge response matrix has a condition number of approximately 115, so two different targets may still leave nearly parallel blind directions. An analytic profile-likelihood calculation shows how spectral overlap and uncertainties in neutrino interactions affect dark-matter discovery sensitivity in the neutrino fog. We discuss the implications of measurements from COHERENT, CONUS+, LZ, XENONnT, and PandaX-4T and specify which theoretical inputs, detector responses, and statistical correlations are needed to combine their constraints. keyword : coherent elastic neutrino-nucleus scattering; light mediators; neutrino--electron scattering; dark matter direct detection; non-standard interactions; solar neutrinos; complementarity
ER -