Souza, E.B.D., Cherwinka, J., Cole, A. et al. (26 more authors) (2017) First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17. Physical Review Letters, 95 (3). 032006. ISSN 0031-9007
Abstract
We present the first search for a dark matter annual modulation signal in the Southern Hemisphere conducted with NaI(Tl) detectors, performed by the DM-Ice17 experiment. Nuclear recoils from dark matter interactions are expected to yield an annually modulated signal independent of location within the Earth’s hemispheres. DM-Ice17, the first step in the DM-Ice experimental program, consists of 17 kg of NaI(Tl) located at the South Pole under 2200 m.w.e. overburden of Antarctic glacial ice. Taken over 3.6 years for a total exposure of 60.8 kg yr, DM-Ice17 data are consistent with no modulation in the energy range of 4–20 keV, providing the strongest limits on weakly interacting massive particle dark matter from a direct detection experiment located in the Southern Hemisphere. The successful deployment and stable long-term operation of DM-Ice17 establishes the South Pole ice as a viable location for future dark matter searches and in particular for a high-sensitivity NaI(Tl) dark matter experiment to directly test the DAMA/LIBRA claim of the observation of dark matter.
Metadata
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Copyright, Publisher and Additional Information: | © 2016 American Physical Society. Reproduced in accordance with the publisher's self-archiving policy. | ||||
Keywords: | physics.ins-det; physics.ins-det; astro-ph.CO; astro-ph.IM; hep-ex | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 16 Nov 2016 11:47 | ||||
Last Modified: | 14 Jan 2020 14:39 | ||||
Published Version: | https://doi.org/10.1103/PhysRevD.95.032006 | ||||
Status: | Published | ||||
Publisher: | American Physical Society | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1103/PhysRevD.95.032006 | ||||
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