Angle J, Aprile E, Arneodo F, Baudis L, Bernstein A, Bolozdynya A, Brusov P, Coelho LCC, Dahl CE, DeViveiros L, Ferella AD, Fernandes LMP, Fiorucci S, Gaitskell RJ, Giboni KL, Gomez R, Hasty R, Kastens L, Kwong J, Lopes JAM, Madden N, Manalaysay A, Manzur A, McKinsey DN, Monzani ME, Ni K, Oberlack U, Orboeck J, Plante G, Santorelli R, dos Santos JMF, Shagin P, Shutt T, Sorensen P, Schulte S, Winant C, Yamashita M. First results from the XENON10 dark matter experiment at the Gran Sasso National Laboratory.
Phys Rev Lett 2008;
100:021303. [PMID:
18232850 DOI:
10.1103/physrevlett.100.021303]
[Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2007] [Indexed: 05/25/2023]
Abstract
The XENON10 experiment at the Gran Sasso National Laboratory uses a 15 kg xenon dual phase time projection chamber to search for dark matter weakly interacting massive particles (WIMPs). The detector measures simultaneously the scintillation and the ionization produced by radiation in pure liquid xenon to discriminate signal from background down to 4.5 keV nuclear-recoil energy. A blind analysis of 58.6 live days of data, acquired between October 6, 2006, and February 14, 2007, and using a fiducial mass of 5.4 kg, excludes previously unexplored parameter space, setting a new 90% C.L. upper limit for the WIMP-nucleon spin-independent cross section of 8.8x10(-44) cm2 for a WIMP mass of 100 GeV/c2, and 4.5x10(-44) cm2 for a WIMP mass of 30 GeV/c2. This result further constrains predictions of supersymmetric models.
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