Autor(es):
Angloher, G. ; 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.
Data: 2014
Identificador Persistente: https://hdl.handle.net/10316/109407
Origem: Estudo Geral - Universidade de Coimbra
Descrição
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.
This work was supported by funds of the German Federal Ministry of Science and Education (BMBF), the Munich Cluster of Excellence (Origin and Structure of the Universe), the Maier- Leibnitz-Laboratorium (Garching), the Science and Technology Facilities Council (STFC) UK, as well as theHelmholtz Alliance forAstroparticle Physics. We gratefully acknowledge the work of Michael Stanger from the crystal laboratory of the TU Munich.We are grateful to LNGS for their generous support of CRESST, in particular to Marco Guetti for his constant assistance.
