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29 March 2024
 
  » arxiv » 2003.1046

 Article overview


First germanium-based constraints on sub-MeV Dark Matter with the EDELWEISS experiment
EDELWEISS Collaboration ; Q. Arnaud ; E. Armengaud ; C. Augier ; A. Benoît ; L. Bergé ; J. Billard ; A. Broniatowski ; P. Camus ; A. Cazes ; M. Chapellier ; F. Charlieux ; M. De Jésus ; L. Dumoulin ; K. Eitel ; E. Elkhoury ; J.-B. Fillipini ; D. Filosofov ; J. Gascon ; A. Giuliani ; M. Gros ; Y. Jin ; A. Juillard ; M. Kleifges ; H. Lattaud ; S. Marnieros ; D. Misiak ; X.-F. Navick ; C. Nones ; E. Olivieri ; C. Oriol ; P. Pari ; B. Paul ; D. Poda ; S. Rozov ; T. Salagnac ; V. Sanglard ; B. Siebenborn ; L. Vagneron ; M. Weber ; E. Yakushev ; A. Zolotarova ;
Date 2 Mar 2020
AbstractThe 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$^{2}$ DM particles interacting with electrons, as well as on dark photons down to 1 eV/c$^2$. 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$^2$ mass range. These results demonstrate the high relevance of cryogenic Ge detectors for the search of DM interactions producing eV-scale electron signals.
Source arXiv, 2003.1046
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