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- Title
Results on MeV-scale dark matter from a gram-scale cryogenic calorimeter operated above ground.
- Authors
Angloher, G.; Bauer, P.; Bento, A.; Bucci, C.; Canonica, L.; Defay, X.; Erb, A.; Feilitzsch, F. V.; Ferreiro Iachellini, N.; Gorla, P.; Gütlein, A.; Hauff, D.; Jochum, J.; Kiefer, M.; Kluck, H.; Kraus, H.; Lanfranchi, J.-C.; Langenkämper, A.; Loebell, J.; Mancuso, M.
- Abstract
Models for light dark matter particles with masses below 1GeV/c² are a natural and well-motivated alternative to so-far unobserved weakly interacting massive particles. Gram-scale cryogenic calorimeters provide the required detector performance to detect these particles and extend the direct dark matter search program of CRESST. A prototype 0.5 g sapphire detector developed for the ν-cleus experiment has achieved an energy threshold of Eth = (19.7±0.9)eV. This is one order of magnitude lower than for previous devices and independent of the type of particle interaction. The result presented here is obtained in a setup above ground without significant shielding against ambient and cosmogenic radiation. Although operated in a high-background environment, the detector probes a new range of light-mass dark matter particles previously not accessiable by direct searches. We report the first limit on the spinindependent dark matter particle-nucleon cross section for masses between 140 and 500MeV/c².
- Subjects
CRYOGENICS; DARK matter; MISSING mass problem (Astronomy); WEAKLY interacting massive particles; PHYSICAL cosmology
- Publication
European Physical Journal C -- Particles & Fields, 2017, Vol 77, Issue 9, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-017-5223-9