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Title: Dark Matter Results from 100 Live Days of XENON100 Data

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 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.

Authors:
; ; ; ; ; ;  [1]; ; ; ; ; ; ;  [2]; ;  [3]; ; ; ;  [4]
  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)
Publication Date:
OSTI Identifier:
21611780
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 13; Other Information: DOI: 10.1103/PhysRevLett.107.131302; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Aprile, E., Choi, B., Giboni, K.-L., Lang, R. F., Lim, K. E., Melgarejo Fernandez, A. J., Plante, G., Arisaka, K., Cline, D., Lam, C. W., Lung, K., Pantic, E., Teymourian, A., Wang, H., Arneodo, F., Bruno, G., Askin, A., Baudis, L., Behrens, A., and Bruch, T. Dark Matter Results from 100 Live Days of XENON100 Data. United States: N. p., 2011. Web. doi:10.1103/PHYSREVLETT.107.131302.
Aprile, E., Choi, B., Giboni, K.-L., Lang, R. F., Lim, K. E., Melgarejo Fernandez, A. J., Plante, G., Arisaka, K., Cline, D., Lam, C. W., Lung, K., Pantic, E., Teymourian, A., Wang, H., Arneodo, F., Bruno, G., Askin, A., Baudis, L., Behrens, A., & Bruch, T. Dark Matter Results from 100 Live Days of XENON100 Data. United States. doi:10.1103/PHYSREVLETT.107.131302.
Aprile, E., Choi, B., Giboni, K.-L., Lang, R. F., Lim, K. E., Melgarejo Fernandez, A. J., Plante, G., Arisaka, K., Cline, D., Lam, C. W., Lung, K., Pantic, E., Teymourian, A., Wang, H., Arneodo, F., Bruno, G., Askin, A., Baudis, L., Behrens, A., and Bruch, T. Fri . "Dark Matter Results from 100 Live Days of XENON100 Data". United States. doi:10.1103/PHYSREVLETT.107.131302.
@article{osti_21611780,
title = {Dark Matter Results from 100 Live Days of XENON100 Data},
author = {Aprile, E. and Choi, B. and Giboni, K.-L. and Lang, R. F. and Lim, K. E. and Melgarejo Fernandez, A. J. and Plante, G. and Arisaka, K. and Cline, D. and Lam, C. W. and Lung, K. and Pantic, E. and Teymourian, A. and Wang, H. and Arneodo, F. and Bruno, G. and Askin, A. and Baudis, L. and Behrens, A. and Bruch, T.},
abstractNote = {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.},
doi = {10.1103/PHYSREVLETT.107.131302},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 13,
volume = 107,
place = {United States},
year = {2011},
month = {9}
}