Low-mass Dark Matter searches with EDELWEISS
J. Gascon
(1)
,
E. Armengaud
(2)
,
Q. Arnaud
(1)
,
C. Augier
(1)
,
A. Benoit
(3)
,
L. Bergé
(4)
,
J. Billard
(1)
,
A. Broniatowski
(4)
,
P. Camus
(5)
,
A. Cazes
(1)
,
M. Chapellier
(4)
,
F. Charlieux
(1)
,
M. de Jésus
(1)
,
L. Dumoulin
(4)
,
K. Eitel
(6)
,
J.-B. Filippini
(1)
,
D. Filosofov
(7)
,
A. Giuliani
(4)
,
M. Gros
(2)
,
Y. Jin
(8)
,
A. Juillard
(1)
,
M. Kleifges
(6)
,
H. Lattaud
(1)
,
S. Marnieros
(4)
,
D. Misiak
(1)
,
X.-F. Navick
(2)
,
C. Nones
(2)
,
E. Olivieri
(4)
,
C. Oriol
(4)
,
P. Pari
(9)
,
B. Paul
(2)
,
D. Poda
(4)
,
S. Rozov
(8)
,
T. Salagnac
(1)
,
V. Sanglard
(1)
,
L. Vagneron
(1)
,
E. Yakushev
(8)
,
A. Zolotarova
(6)
1
IP2I Lyon -
Institut de Physique des 2 Infinis de Lyon
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 NEEL - HELFA - Hélium : du fondamental aux applications
4 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
5 NEEL - Cryo - Cryogénie
6 KIT - Karlsruhe Institute of Technology = Karlsruher Institut für Technologie
7 JINR - Joint Institute for Nuclear Research
8 C2N - Centre de Nanosciences et de Nanotechnologies [Orsay]
9 LLB - UMR 12 - Laboratoire Léon Brillouin
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 NEEL - HELFA - Hélium : du fondamental aux applications
4 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
5 NEEL - Cryo - Cryogénie
6 KIT - Karlsruhe Institute of Technology = Karlsruher Institut für Technologie
7 JINR - Joint Institute for Nuclear Research
8 C2N - Centre de Nanosciences et de Nanotechnologies [Orsay]
9 LLB - UMR 12 - Laboratoire Léon Brillouin
Résumé
The EDELWEISS collaboration searches for light Dark Matter (DM) particles using germanium detectors equipped with a charge and phonon signal readout. Using the Neganov-Trofimov-Luke effect, an rms resolution of 0.53 electron-hole pair was obtained on a massive (33.4 g) Ge detector operated underground at the Laboratoire Souterrain de Modane. This record sensitivity made possible a search for Dark Photon DM down to 1 eV/c2 and to DM-electron interactions below 1 MeV/c2. This demonstrates for the first time the high relevance of cryogenic Ge detectors in searches at low thresholds and is an important step of the development of Ge detectors with improved performance in the context of the EDELWEISS-SubGeV program.