First Constraints from DAMIC-M on Sub-GeV Dark-Matter Particles Interacting with Electrons
High Energy Physics - Experiment
2024-09-26 v2 Cosmology and Nongalactic Astrophysics
Abstract
We report constraints on sub-GeV dark matter particles interacting with electrons from the first underground operation of DAMIC-M detectors. The search is performed with an integrated exposure of 85.23 g days, and exploits the subelectron charge resolution and low level of dark current of DAMIC-M charge-coupled devices (CCDs). Dark-matter-induced ionization signals above the detector dark current are searched for in CCD pixels with charge up to 7e. With this dataset we place limits on dark matter particles of mass between 0.53 and 1000 MeV/, excluding unexplored regions of parameter space in the mass ranges [1.6,1000] MeV/ and [1.5,15.1] MeV/ for ultralight and heavy mediator interactions, respectively.
Keywords
Cite
@article{arxiv.2302.02372,
title = {First Constraints from DAMIC-M on Sub-GeV Dark-Matter Particles Interacting with Electrons},
author = {I. Arnquist and N. Avalos and D. Baxter and X. Bertou and N. Castello-Mor and A. E. Chavarria and J. Cuevas-Zepeda and J. Cortabitarte Gutierrez and J. Duarte-Campderros and A. Dastgheibi-Fard and O. Deligny and C. De Dominicis and E. Estrada and N. Gadola and R. Gaıor and T. Hossbach and L. Iddir and L. Khalil and B. Kilminster and A. Lantero-Barreda and I. Lawson and S. Lee and A. Letessier-Selvon and P. Loaiza and A. Lopez-Virto and A. Matalon and S. Munagavalasa and K. McGuire and P. Mitra and D. Norcini and G. Papadopoulos and S. Paul and A. Piers and P. Privitera and K. Ramanathan and P. Robmann and M. Settimo and R. Smida and R. Thomas and M. Traina and I. Vila and R. Vilar and G. Warot and R. Yajur and J-P. Zopounidis},
journal= {arXiv preprint arXiv:2302.02372},
year = {2024}
}