6533b83afe1ef96bd12a6fa5
RESEARCH PRODUCT
Search for Event Rate Modulation in XENON100 Electronic Recoil Data
E. AprileJ. AalbersF. AgostiniM. AlfonsiM. AnthonyL. AraziK. ArisakaF. ArneodoC. BalanP. BarrowL. BaudisB. BauermeisterP. A. BreurA. BrownE. BrownS. BruennerG. BrunoR BudnikL. BütikoferJ. M. R. CardosoM. CervantesD. CoderreA. P. ColijnH. ContrerasJ. P. CussonneauM. P. DecowskiP. De PerioA. Di GiovanniE. DuchovniS. FattoriA. D. FerellaA. FieguthW. FulgioneF. GaoM. GarbiniC. GeisL. W. GoetzkeC. GrignonE. GrossW. HampelC. HasterokR. ItayF. KaetherB. KaminskyG. KesslerA. KishH. LandsmanR. F. LangM. Le CallochD. LellouchL. LevinsonC. LevyS. LindemannM. LindnerJ. A. M. LopesA. LyashenkoS. MacmullinT. Marrodán UndagoitiaJ. MasbouF. V. MassoliD. MayaniA. J. Melgarejo FernandezY. MengM. MessinaK. MicheneauB. MiguezA. MolinarioM. MurraJ. NaganomaK. NiU. OberlackS. E. A. OrrigoP. PakarhaR. PersianiF. PiastraJ. PienaarG. PlanteN. PrielL. RauchS. ReichardC. ReuterA. RizzoS. RosendahlJ. M. F. Dos SantosG. SartorelliS. SchindlerJ. SchreinerM. SchumannL. Scotto LavinaM. SelviP. ShaginH. SimgenA. TeymourianD. ThersA. TiseniGian Carlo TrincheroC. TunnellR. WallH. WangM. WeberC. WeinheimerY. ZhangXenon Collaborationsubject
Dark Matter Wimps ModulationPhysicsPhysics - Instrumentation and DetectorsCosmology and Nongalactic Astrophysics (astro-ph.CO)530 PhysicsDetectorDark matterPhase (waves)FOS: Physical sciencesGeneral Physics and AstronomySigmaInstrumentation and Detectors (physics.ins-det)AstrophysicsParticle detectorHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)RecoilModulation[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Event (particle physics)Astrophysics - Cosmology and Nongalactic Astrophysicsdescription
We have searched for periodic variations of the electronic recoil event rate in the (2-6) keV energy range recorded between February 2011 and March 2012 with the XENON100 detector, adding up to 224.6 live days in total. Following a detailed study to establish the stability of the detector and its background contributions during this run, we performed an un-binned profile likelihood analysis to identify any periodicity up to 500 days. We find a global significance of less than 1 sigma for all periods suggesting no statistically significant modulation in the data. While the local significance for an annual modulation is 2.8 sigma, the analysis of a multiple-scatter control sample and the phase of the modulation disfavor a dark matter interpretation. The DAMA/LIBRA annual modulation interpreted as a dark matter signature with axial-vector coupling of WIMPs to electrons is excluded at 4.8 sigma.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-28 | Physical Review Letters |