First germanium-based constraints on sub-MeV Dark Matter with the EDELWEISS experiment
Abstract
The EDELWEISS collaboration has performed a search for Dark Matter (DM) particles interacting with electrons using a 33.4 g Ge cryogenic detector operated underground at the LSM. A charge resolution of 0.53 electron-hole pairs (RMS) has been achieved using the Neganov-Trofimov-Luke amplification with a bias of 78 V. We set the first Ge-based constraints on sub-MeV/c DM particles interacting with electrons, as well as on dark photons down to 1 eV/c. These are competitive with other searches. In particular, new limits are set on the kinetic mixing of dark photon DM in a so far unconstrained parameter space region in the 6 to 9 eV/c mass range. These results demonstrate the high relevance of cryogenic Ge detectors for the search of DM interactions producing eV-scale electron signals.
Keywords
Cite
@article{arxiv.2003.01046,
title = {First germanium-based constraints on sub-MeV Dark Matter with the EDELWEISS experiment},
author = {EDELWEISS Collaboration and Q. Arnaud and E. Armengaud and C. Augier and A. Benoît and L. Bergé and J. Billard and A. Broniatowski and P. Camus and A. Cazes and M. Chapellier and F. Charlieux and M. De Jésus and L. Dumoulin and K. Eitel and E. Elkhoury and J. -B. Fillipini and D. Filosofov and J. Gascon and A. Giuliani and M. Gros and Y. Jin and A. Juillard and M. Kleifges and H. Lattaud and S. Marnieros and D. Misiak and X. -F. Navick and C. Nones and E. Olivieri and C. Oriol and P. Pari and B. Paul and D. Poda and S. Rozov and T. Salagnac and V. Sanglard and B. Siebenborn and L. Vagneron and M. Weber and E. Yakushev and A. Zolotarova},
journal= {arXiv preprint arXiv:2003.01046},
year = {2022}
}
Comments
6 pages, 4 figures, corrected typos