Direct detection of right-handed fermionic dark matter: electron-recoil measurements in Xe atoms
Abstract
We present theoretical estimations of the event rates for the interaction between a right-handed fermionic dark matter with an electron bound to a xenon atom. Motivated by recent astrophysical and cosmological constraints on a fermionic dark matter candidate in the sub-MeV mass range, we study such an interaction through an effective electromagnetic channel where the output consists of standard-model particles. This mechanism allows right-handed neutral dark matter fermions to couple with standard-model particles with the interchange of W± or Z bosons, without the need to add extra fields. We generalize and extend previous results on this type of channels, by including for the ionization form factor arising from the interaction of the fermionic candidate with bound electrons. In addition, we compute the sensitivity curves for different direct detection experiments in such a challenging light particle mass range.
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BibTeX
@misc{collazo2026direct,
title = {{Direct detection of right-handed fermionic dark matter: electron-recoil measurements in Xe atoms}},
author = {Santiago Collazo and Carlos Argüelles and Soroush Shakeri and Osvaldo Civitarese},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2609.13562},
eprint = {2609.13562},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.13562},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Direct detection of right-handed fermionic dark matter: electron-recoil measurements in Xe atoms
AU - Santiago Collazo
AU - Carlos Argüelles
AU - Soroush Shakeri
AU - Osvaldo Civitarese
PY - 2026
DA - 2026/10/22
PB - arXiv
DO - 10.48550/arxiv.2609.13562
UR - https://arxiv.org/abs/2609.13562
AB - We present theoretical estimations of the event rates for the interaction between a right-handed fermionic dark matter with an electron bound to a xenon atom. Motivated by recent astrophysical and cosmological constraints on a fermionic dark matter candidate in the sub-MeV mass range, we study such an interaction through an effective electromagnetic channel where the output consists of standard-model particles. This mechanism allows right-handed neutral dark matter fermions to couple with standard-model particles with the interchange of W^± or Z bosons, without the need to add extra fields. We generalize and extend previous results on this type of channels, by including for the ionization form factor arising from the interaction of the fermionic candidate with bound electrons. In addition, we compute the sensitivity curves for different direct detection experiments in such a challenging light particle mass range.
ER -