Dark Matter Results from 100 Live Days of XENON100 Data

E. Aprile(Columbia University), K. Arisaka(University of California, Los Angeles), F. Arneodo(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso), A. Aşkın(University of Zurich), L. Baudis(University of Zurich), A. Behrens(University of Zurich), K. Bokeloh(University of Münster), A. Brown(University of Münster), T. Bruch(University of Zurich), G. Bruno(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso), J. M. R. Cardoso(University of Coimbra), W.-T. Chen(Centre National de la Recherche Scientifique), Bernard C. K. Choi(Columbia University), D. Cline(University of California, Los Angeles), E. Duchovni(Weizmann Institute of Science), S. Fattori(Johannes Gutenberg University Mainz), A. D. Ferella(University of Zurich), F. Gao(Shanghai Jiao Tong University), Karl Giboni(Columbia University), E. Gross(Weizmann Institute of Science), A. Kish(University of Zurich), C. W. Lam(University of California, Los Angeles), J. Lamblin(Centre National de la Recherche Scientifique), R. F. Lang(Columbia University), C. Levy(University of Münster), K. E. Lim(Columbia University), Q. Lin(Shanghai Jiao Tong University), S. Lindemann(Max Planck Institute for Nuclear Physics), M. Lindner(Max Planck Institute for Nuclear Physics), J. A. M. Lopes(University of Coimbra), K. Lung(University of California, Los Angeles), T. Marrodán Undagoitia(University of Zurich), Y. Mei(Johannes Gutenberg University Mainz), A. J. Melgarejo Fernandez(Columbia University), K. Ni(Shanghai Jiao Tong University), U. Oberlack(Johannes Gutenberg University Mainz), S. E. A. Orrigo(University of Coimbra), E. Pantic(University of California, Los Angeles), R. Persiani(Istituto Nazionale di Fisica Nucleare, Sezione di Bologna), G. Plante(Columbia University), Antonio Carlos Chaves Ribeiro(University of Coimbra), R. Santorelli(University of Zurich), J.M.F. dos Santos(University of Coimbra), G. Sartorelli(Istituto Nazionale di Fisica Nucleare, Sezione di Bologna), M. Schümann(University of Zurich), M. Selvi(Istituto Nazionale di Fisica Nucleare, Sezione di Bologna), P. Shagin(Rice University), H. Simgen(Max Planck Institute for Nuclear Physics), A. Teymourian(University of California, Los Angeles), D. Thers(Centre National de la Recherche Scientifique), O. Vitells(Weizmann Institute of Science), H. Wang(University of California, Los Angeles), M. Weber(Max Planck Institute for Nuclear Physics), C. Weinheimer(University of Münster)
Physical Review Letters
September 19, 2011
10.1103/physrevlett.107.131302
Cited by 818Open Access
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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 7.0 × 10(-45) cm(2) for a WIMP mass of 50 GeV/c(2) at 90% confidence level.

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