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19 April 2024

» arxiv » 1104.2549

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Dark Matter Results from 100 Live Days of XENON100 Data
XENON100 Collaboration ; E. Aprile ; K. Arisaka ; F. Arneodo ; A. Askin ; L. Baudis ; A. Behrens ; K. Bokeloh ; E. Brown ; T. Bruch ; G. Bruno ; J. M. R. Cardoso ; W.-T. Chen ; B. Choi ; D. Cline ; E. Duchovni ; S. Fattori ; A. D. Ferella ; F. Gao ; K.-L. Giboni ; E. Gross ; A. Kish ; C. W. Lam ; J. Lamblin ; R. F. Lang ; C. Levy ; K. E. Lim ; Q. Lin ; S. Lindemann ; M. Lindner ; J. A. M. Lopes ; K. Lung ; T. Marrodan Undagoitia ; Y. Mei ; A. J. Melgarejo Fernandez ; K. Ni ; U. Oberlack ; S. E. A. Orrigo ; E. Pantic ; R. Persiani ; G. Plante ; A. C. C. Ribeiro ; R. Santorelli ; J. M. F. dos Santos ; G. Sartorelli ; M. Schumann ; M. Selvi ; P. Shagin ; H. Simgen ; A. Teymourian ; D. Thers ; O. Vitells ; H. Wang ; M. Weber ; C. Weinheimer ;
Date:	13 Apr 2011
Abstract:	We present results from the direct search for dark matter with the XENON100 detector, installed underground at the Laboratori Nazionali del Gran Sasso of INFN, Italy. XENON100 is a two-phase time projection chamber with a 62 kg liquid xenon target. Interaction vertex reconstruction in three dimensions with millimeter precision allows to select only the innermost 48 kg as ultra-low background fiducial target. In 100.9 live days of data, acquired between January and June 2010, no evidence for dark matter is found. Three candidate events were observed in a pre-defined signal region with an expected background of 1.8 +/- 0.6 events. This leads to the most stringent limit on dark matter interactions today, excluding spin-independent elastic WIMP-nucleon scattering cross-sections above 7.0x10^-45 cm^2 for a WIMP mass of 50 GeV/c^2 at 90% confidence level.
Source:	arXiv, 1104.2549
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