期刊
EUROPEAN PHYSICAL JOURNAL C
卷 79, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-019-6860-y
关键词
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资金
- INFN (Italy)
- NSF (USA)
- ARC (Australia) [LE170100162, LE16010080, DP170101675, LP150100075]
- European Union'sHorizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [703650]
- Australian Research Council [LE170100162] Funding Source: Australian Research Council
- Marie Curie Actions (MSCA) [703650] Funding Source: Marie Curie Actions (MSCA)
SABRE aims to directly measure the annual modulation of the dark matter interaction rate with NaI(Tl) crystals. A modulation compatible with the standard hypothesis, in which our Galaxy is immersed in a dark matter halo, has been measured by the DAMA experiment in the same target material. Other direct detection experiments, using different target materials, seem to exclude the interpretation of such modulation in the simplest scenario of WIMP-nucleon elastic scattering. The SABRE experiment aims to carry out an independent search with sufficient sensitivity to confirm or refute the DAMA claim. The goal of the SABRE experiment is to achieve the lowest background rate for a NaI(Tl) experiment (order of 0.1 cpd/kg/keV(ee) in the energy region of interest for dark matter). This challenging goal could be achievable by operating high-purity crystals inside a liquid scintillator veto for active background rejection. In addition, twin detectors will be located in the northern and southern hemispheres to identify possible contributions to the modulation from seasonal or site-related effects. The SABRE project includes an initial Proof-of-Principle phase at LNGS (Italy), to assess the radio-purity of the crystals and the efficiency of the liquid scintillator veto. This paper describes the general concept of SABRE and the expected sensitivity to WIMP annual modulation.
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