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Results on light dark matter particles with a low-threshold CRESST-II detector

  • G. Angloher
  • , A. Bento
  • , C. Bucci
  • , L. Canonica
  • , X. Defay
  • , A. Erb
  • , F. von Feilitzsch
  • , N. Ferreiro Iachellini
  • , P. Gorla
  • , A. Gütlein
  • , D. Hauff
  • , J. Jochum
  • , M. Kiefer
  • , H. Kluck
  • , H. Kraus
  • , J. C. Lanfranchi
  • , J. Loebell
  • , A. Münster
  • , C. Pagliarone
  • , F. Petricca
  • W. Potzel, F. Pröbst, F. Reindl, K. Schäffner, J. Schieck, S. Schönert, W. Seidel, L. Stodolsky, C. Strandhagen, R. Strauss, A. Tanzke, H. H. Trinh Thi, C. Türkoğlu, M. Uffinger, A. Ulrich, I. Usherov, S. Wawoczny, M. Willers, M. Wüstrich, A. Zöller
  • Max-Planck-Institut für Physik
  • Coimbra University Pó lo II
  • Laboratori Nazionali del Gran Sasso
  • Cluster of Excellence E-conversion
  • Walther-Meissner-Institut
  • Österreichische Akademie der Wissenschaften
  • Technical University of Vienna
  • University of Tübingen
  • University of Oxford

Research output: Contribution to journalLetterpeer-review

395 Scopus citations

Abstract

The CRESST-II experiment uses cryogenic detectors to search for nuclear recoil events induced by the elastic scattering of dark matter particles in CaWO4 crystals. Given the low energy threshold of our detectors in combination with light target nuclei, low mass dark matter particles can be probed with high sensitivity. In this letter we present the results from data of a single detector module corresponding to 52 kg live days. A blind analysis is carried out. With an energy threshold for nuclear recoils of 307 eV we substantially enhance the sensitivity for light dark matter. Thereby, we extend the reach of direct dark matter experiments to the sub- GeV/c2 region and demonstrate that the energy threshold is the key parameter in the search for low mass dark matter particles.

Original languageEnglish
Article number25
Pages (from-to)1-8
Number of pages8
JournalEuropean Physical Journal C
Volume76
Issue number1
DOIs
StatePublished - 1 Jan 2016
Externally publishedYes

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