Results on low mass WIMPs using an upgraded CRESST-II detector

• Autor(a) principal: Angloher, G.
• Data de Publicação: 2014
• Outros Autores: Bento, A., Bucci, C., Canonica, L., Erb, A., von Feilitzsch, F., Iachellini, N. Ferreiro, Gorla, P., Gütlein, A., Hauff, D., Huff, P., Jochum, J., Kiefer, M., Kister, C., Kluck, H., Kraus, H., Lanfranchi, J.-C., Loebell, J., Münster, A., Petricca, F., Potzel, W., Pröbst, F., Reindl, F., Roth, S., Rottler, K., Sailer, C., Schäffner, K., Schieck, J., Schmaler, J., Scholl, S., Schönert, S., Seidel, W., von Sivers, M., Stodolsky, L., Strandhagen, C., Strauß, R., Tanzke, A., Uffinger, M., Ulrich, A., Usherov, I., Wawoczny, S., Willers, M., Wüstrich, M., Zöller, A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10316/109407; https://doi.org/10.1140/epjc/s10052-014-3184-9

The CRESST-II cryogenic dark matter search aims for the detection of WIMPs via elastic scattering off nuclei in CaWO4 crystals. We present results from a lowthreshold analysis of a single upgraded detector module. This module efficiently vetoes low energy backgrounds induced by α-decays on inner surfaces of the detector. With an exposure of 29.35 kg live days collected in 2013 we set a limit on spin-independent WIMP-nucleon scattering which probes a new region of parameter space for WIMP masses below 3 GeV/c2, previously not covered in direct detection searches. A possible excess over background discussed for the previous CRESST-II phase 1 (from 2009 to 2011) is not confirmed.