Details

Autor(en) / Beteiligte

• Angloher, G
• Bauer, P
• Bento, A
• Bucci, C
• Canonica, L
• Defay, X
• Erb, A

Titel

Results on MeV-scale dark matter from a gram-scale cryogenic calorimeter operated above ground

Ist Teil von

• The European physical journal. C, Particles and fields, 2017-09, Vol.77 (9), p.1-6

Ort / Verlag

Heidelberg: Springer

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Models for light dark matter particles with masses below 1 GeV/c [Formula omitted] 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 [Formula omitted]-cleus experiment has achieved an energy threshold of [Formula omitted] 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 accessible by direct searches. We report the first limit on the spin-independent dark matter particle-nucleon cross section for masses between 140 and 500 MeV/c [Formula omitted].