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Dark matter results from 225 live days of XENON100 data.

Authors :
Aprile E
Alfonsi M
Arisaka K
Arneodo F
Balan C
Baudis L
Bauermeister B
Behrens A
Beltrame P
Bokeloh K
Brown E
Bruno G
Budnik R
Cardoso JM
Chen WT
Choi B
Cline D
Colijn AP
Contreras H
Cussonneau JP
Decowski MP
Duchovni E
Fattori S
Ferella AD
Fulgione W
Gao F
Garbini M
Ghag C
Giboni KL
Goetzke LW
Grignon C
Gross E
Hampel W
Kaether F
Kish A
Lamblin J
Landsman H
Lang RF
Le Calloch M
Levy C
Lim KE
Lin Q
Lindemann S
Lindner M
Lopes JA
Lung K
Marrodán Undagoitia T
Massoli FV
Melgarejo Fernandez AJ
Meng Y
Molinario A
Nativ E
Ni K
Oberlack U
Orrigo SE
Pantic E
Persiani R
Plante G
Priel N
Rizzo A
Rosendahl S
dos Santos JM
Sartorelli G
Schreiner J
Schumann M
Scotto Lavina L
Scovell PR
Selvi M
Shagin P
Simgen H
Teymourian A
Thers D
Vitells O
Wang H
Weber M
Weinheimer C
Source :
Physical review letters [Phys Rev Lett] 2012 Nov 02; Vol. 109 (18), pp. 181301. Date of Electronic Publication: 2012 Nov 02.
Publication Year :
2012

Abstract

We report on a search for particle dark matter with the XENON100 experiment, operated at the Laboratori Nazionali del Gran Sasso for 13 months during 2011 and 2012. XENON100 features an ultralow electromagnetic background of (5.3 ± 0.6) × 10(-3) events/(keV(ee) × kg × day) in the energy region of interest. A blind analysis of 224.6 live days × 34 kg exposure has yielded no evidence for dark matter interactions. The two candidate events observed in the predefined nuclear recoil energy range of 6.6-30.5 keV(nr) are consistent with the background expectation of (1.0 ± 0.2) events. A profile likelihood analysis using a 6.6-43.3 keV(nr) energy range sets the most stringent limit on the spin-independent elastic weakly interacting massive particle-nucleon scattering cross section for weakly interacting massive particle masses above 8 GeV/c(2), with a minimum of 2 × 10(-45) cm(2) at 55 GeV/c(2) and 90% confidence level.

Details

Language :
English
ISSN :
1079-7114
Volume :
109
Issue :
18
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
23215267
Full Text :
https://doi.org/10.1103/PhysRevLett.109.181301