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  • Results on low mass WIMPs using an upgraded CRESST-II detector
    Collaboration, CRESST; Angloher, G; Bento, A; Bucci, C; Canonica, L; Erb, A; Feilitzsch, F v; N Ferreiro Iachellini; Gorla, P; Gütlein, A; Hauff, D; Huff, P; Jochum, J; Kiefer, M; Kister, C; Kluck, H; Kraus, H; J -C Lanfranchi; 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; Sivers, M v; Stodolsky, L; Strandhagen, C; Strauss, R; Tanzke, A; Uffinger, M; Ulrich, A; Usherov, I; Wawoczny, S; Willers, M; Wüstrich, M; Zöller, A

    arXiv.org, 01/2015
    Paper, Journal Article

    The CRESST-II cryogenic dark matter search aims for the detection of WIMPs via elastic scattering off nuclei in CaWO\(_4\) crystals. We present results from a low-threshold analysis of a single upgraded detector module. This module efficiently vetoes low energy backgrounds induced by \(\alpha\)-decays on inner surfaces of the detector. With an exposure of \unit29.35{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 \unit3{GeV/c\(^2\)}, 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.

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