First Results from the XENON10 Dark Matter Experiment at the Gran Sasso National Laboratory
- Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
- Department of Physics, Columbia University, New York, New York 10027 (United States)
- INFN-Laboratori Nazionali del Gran Sasso, Assergi, 67010 (Italy)
- Department of Physics, RWTH Aachen University, Aachen, 52074 (Germany)
- Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106 (United States)
- Department of Physics, University of Coimbra, R. Larga, 3004-516, Coimbra (Portugal)
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{sup -44} cm{sup 2} for a WIMP mass of 100 GeV/c{sup 2}, and 4.5x10{sup -44} cm{sup 2} for a WIMP mass of 30 GeV/c{sup 2}. This result further constrains predictions of supersymmetric models.
- OSTI ID:
- 21020928
- Journal Information:
- Physical Review Letters, Vol. 100, Issue 2; Other Information: DOI: 10.1103/PhysRevLett.100.021303; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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