Searches for electron interactions induced by new physics in the EDELWEISS-III Germanium bolometers
Résumé
We make use of the EDELWEISS-III array of germanium bolometers to search for electron interactions at the keV scale induced by phenomena beyond the Standard Model. A 90% C.L. lower limit is set on the electron lifetime decaying to invisibles, τ>1.2×1024 years. We investigate the emission of axions or axionlike particles (ALPs) by the Sun, constraining the coupling parameters gae<1.1×10-11 and gae×gaNeff<3.5×10-17 at 90% C.L. in the massless limit. We also directly search for the absorption of bosonic dark matter particles that would constitute our local galactic halo. Limits are placed on the couplings of ALPs or hidden photon dark matter in the mass range 0.8–500 keV/c2. Prospects for searching for dark matter particles with masses down to 150 eV/c2 using improved detectors are presented.
Mots clés
Experiments in gravity
cosmology
cosmic rays
electron: interaction
electron: lifetime
boson: dark matter
galaxy: halo
galaxy: dark matter
axion: dark matter
dark matter: mass
photon: hidden sector
new physics
germanium
bolometer
axion-like particles
absorption
axion: solar
axion: coupling
coupling constant: upper limit
experimental results
S029AEC
S029HPH
S029IAN
S030UDM