Dark Matter Results from 100 Live Days of XENON100 Data

Journal Article · Fri Sep 23 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.131302· OSTI ID:21611780

Aprile, E; Choi, B; Giboni, K -L; Lang, R F; Lim, K E; Melgarejo Fernandez, A J; Plante, G ^[1]; Arisaka, K; Cline, D; Lam, C W; Lung, K; Pantic, E; Teymourian, A; Wang, H ^[2]; Arneodo, F; Bruno, G ^[3]; Askin, A; Baudis, L; Behrens, A; Bruch, T ^[4]

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1. Physics Department, Columbia University, New York, New York 10027 (United States)
2. Physics and Astronomy Department, University of California, Los Angeles, California 90095 (United States)
3. INFN, Laboratori Nazionali del Gran Sasso, Assergi, 67100 (Italy)
4. Physics Institute, University of Zuerich, Winterthurerstr. 190, CH-8057 (Switzerland)

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 the selection of only the innermost 48 kg as the ultralow 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 the 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 weakly interacting massive particle (WIMP) nucleon scattering cross sections above 7.0x10{sup -45} cm{sup 2} for a WIMP mass of 50 GeV/c{sup 2} at 90% confidence level.

• OSTI ID: 21611780
• Journal Information: Physical Review Letters, Vol. 107, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.107.131302; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CROSS SECTIONS
GEV RANGE 10-100
NONLUMINOUS MATTER
NUCLEONS
TIME PROJECTION CHAMBERS
UNDERGROUND FACILITIES
XENON
BARYONS
DRIFT CHAMBERS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FLUIDS
GASES
GEV RANGE
HADRONS
MATTER
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
NONMETALS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RARE GASES