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25 April 2024

» arxiv » 1607.7410

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Search for low-mass WIMPs in a 0.6 kg day exposure of the DAMIC experiment at SNOLAB
A. Aguilar-Arevalo ; D. Amidei ; X. Bertou ; M. Butner ; G. Cancelo ; A. Castañeda Vázquez ; B.A. Cervantes Vergara ; A.E. Chavarria ; C.R. Chavez ; J.R.T. de Mello Neto ; J.C. D'Olivo ; J. Estrada ; G. Fernandez Moroni ; R. Gaïor ; Y. Guandincerri ; K.P. Hernández Torres ; F. Izraelevitch ; A. Kavner ; B. Kilminster ; I. Lawson ; A. Letessier-Selvon ; J. Liao ; J. Molina ; J. Pena ; P. Privitera ; K. Ramanathan ; Y. Sarkis ; T. Schwarz ; C. Sengul ; M. Settimo ; M. Sofo Haro ; R. Thomas ; J. Tiffenberg ; E. Tiouchichine ; D. Torres Machado ; F. Trillaud ; X. You ; J. Zhou ;
Date:	25 Jul 2016
Abstract:	We present results of a dark matter search performed with a 0.6 kg day exposure of the DAMIC experiment at the SNOLAB underground laboratory. We measured the energy spectrum of ionization events in the bulk silicon of charge-coupled devices (CCDs) down to a signal of 60 eV electron-equivalent. The data is consistent with radiogenic backgrounds, and constraints on the spin-independent WIMP-nucleon elastic-scattering cross-section are accordingly placed. Cross-sections relevant to the potential signal from the CDMS-II Si experiment are excluded using the same target for the first time. This result, obtained with a limited exposure, demonstrates the potential to explore the low-mass WIMP region (<10 GeV/$c^{2}$) of the upcoming DAMIC100, a 100 g detector currently being installed in SNOLAB.
Source:	arXiv, 1607.7410
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