6533b824fe1ef96bd1280a78

RESEARCH PRODUCT

Dark Matter Results from 100 Live Days of XENON100 Data

K. ArisakaMarc SchumannP. ShaginF. ArneodoJ. A. M. LopesA. KishG. SartorelliK. E. LimR. SantorelliManfred LindnerC. W. LamK. BokelohS. FattoriA. BehrensM. SelviJ. LamblinEilam GrossElena AprileDavid B. ClineD. ThersY. MeiY. MeiE. PanticR. F. LangA. TeymourianR. PersianiEthan BrownT. BruchK. L. GiboniHardy SimgenA. D. FerellaHongwei WangM. WeberT. Marrodán UndagoitiaC. LevyCh. WeinheimerB. ChoiG. PlanteK. LungLaura BaudisJ.m.f. Dos SantosSebastian LindemannKaixuan NiA. J. Melgarejo FernandezS. E. A. OrrigoA. C. C. RibeiroGiacomo BrunoO. VitellsUwe OberlackUwe OberlackQing LinEhud DuchovniA. AskinJoão CardosoF. GaoW. T. Chen

subject

PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Large Underground Xenon experiment010308 nuclear & particles physicsDARK MATTERDark matterHadronFOS: Physical sciencesGeneral Physics and AstronomyElementary particleFermion01 natural sciencesParticle detectorHigh Energy Physics - ExperimentWIMPSNuclear physicsHigh Energy Physics - Experiment (hep-ex)XENONWIMP0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]TPC010306 general physicsNucleonAstrophysics - Cosmology and Nongalactic Astrophysics

description

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 to select only the innermost 48 kg as ultra-low 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 a pre-defined 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 WIMP-nucleon scattering cross-sections above 7.0x10^-45 cm^2 for a WIMP mass of 50 GeV/c^2 at 90% confidence level.

yearjournalcountryeditionlanguage
2011-01-01
10.1103/physrevlett.107.131302http://hdl.handle.net/20.500.11769/528503