6533b858fe1ef96bd12b6e07
RESEARCH PRODUCT
Search for Light Dark Matter Interactions Enhanced by the Migdal Effect or Bremsstrahlung in XENON1T.
A. DepoianT. BergerJ. QinM. SelviT. ZhuF. D. AmaroH. LandsmanGuillaume PlanteN. RuppM. IacovacciQing LinBoris BauermeisterA. KopecN. UpoleD. CichonD. WenzR. F. LangR. PeresB. RiedelN. ŠArčevićShingo KazamaW. FulgioneP. Di GangiK. MoråM. MessinaP. A. BreurM. ManentiJ. YeKaixuan NiF. JoergL. AlthueserA. ElykovR. PodviianiukM. MurraElena AprileS. SchindlerC. CapelliYanxi ZhangM. AlfonsiC. TherreauF. ArneodoGian Carlo TrincheroD. SchulteJan ConradC. HasterokApril S. BrownR. ItayE. AngelinoRan BudnikUwe OberlackF. ToschiFabrizio MarignettiJ. FeiF. LombardiD. Ramírez GarcíaYuehuan WeiV. PizzellaM. GarbiniL. BellagambaY. MosbacherGiacomo BrunoA. Di GiovanniC. MacolinoJörn MahlstedtJ. NaganomaJ. P. ZopounidisMichelle GallowayJ. HowlettM. L. BenabderrahmaneS. ReichardO. WackEthan BrownMarc SchumannH. QiuC. HilsA. ManfrediniA. ManfrediniL. LevinsonJ. SchreinerK. OdgersS. BruennerJ. WulfJ. PalacioJulien MasbouH. SimgenM. P. DecowskiManfred LindnerJ. PienaarM. KobayashiG. EurinK. MicheneauE. ShockleyJelle AalbersGabriella SartorelliL. Scotto LavinaAuke-pieter ColijnKate C. MillerA. D. FerellaHongwei WangCh. WeinheimerJ. A. M. LopesA. KishA. Gallo RossoM. VargasT. Marrodán UndagoitiaA. RocchettiJean-pierre CussonneauBart PelssersC. TunnellC. WittwegA. FieguthD. CoderreL. GrandiG. KoltmanManuel Gameiro Da SilvaA. MolinarioM. ScheibelhutD. BargeG. VoltaE. HogenbirkV. C. AntochiP. ShaginLaura BaudisDominique ThersP. GaemersZ. GreeneJ.m.f. Dos SantosF. AgostiniSebastian LindemannE. López FuneS. MastroianniSara DiglioJoão CardosoF. GaoP. De Periosubject
xenon: targetPhysics - Instrumentation and Detectorsdark matter: interactionelastic scatteringGeneral Physics and Astronomy01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)XenonIonizationexcited state[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Nuclear ExperimentLight dark matterElastic scatteringPhysicsxenon: liquidatommomentum transferMomentum transferBremsstrahlungInstrumentation and Detectors (physics.ins-det)photon: bremsstrahlungS030DN5Weakly interacting massive particlesExcited stateAstrophysics - Cosmology and Nongalactic AstrophysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Dark matterLight Dark Matter Direct search Liquid Xenon TPCFOS: Physical sciencesS030DI5chemistry.chemical_elementNuclear physicsParticle dark matterrecoilionization0103 physical sciencesDark matter[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010306 general physicsscintillation counterS030DP5010308 nuclear & particles physicsdown: masssensitivityDark matter Particle dark matter Weakly interacting massive particles* Automatic Keywords *chemistryElementary Particles and Fieldsbremsstrahlung: emission[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]description
Direct dark matter detection experiments based on a liquid xenon target are leading the search for dark matter particles with masses above ∼5 GeV/c2, but have limited sensitivity to lighter masses because of the small momentum transfer in dark matter-nucleus elastic scattering. However, there is an irreducible contribution from inelastic processes accompanying the elastic scattering, which leads to the excitation and ionization of the recoiling atom (the Migdal effect) or the emission of a bremsstrahlung photon. In this Letter, we report on a probe of low-mass dark matter with masses down to about 85 MeV/c2 by looking for electronic recoils induced by the Migdal effect and bremsstrahlung using data from the XENON1T experiment. Besides the approach of detecting both scintillation and ionization signals, we exploit an approach that uses ionization signals only, which allows for a lower detection threshold. This analysis significantly enhances the sensitivity of XENON1T to light dark matter previously beyond its reach.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-12-13 | Physical review letters |