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First Dark Matter Search Results from the XENON1T Experiment
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Number of Authors: 126
2017 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 119, no 18, 181301Article in journal (Refereed) Published
Abstract [en]

We report the first dark matter search results from XENON1T, a similar to 2000-kg-target-mass dual-phase (liquid-gas) xenon time projection chamber in operation at the Laboratori Nazionali del Gran Sasso in Italy and the first ton-scale detector of this kind. The blinded search used 34.2 live days of data acquired between November 2016 and January 2017. Inside the (1042 +/- 12)-kg fiducial mass and in the [5, 40] keV(nr) energy range of interest for weakly interacting massive particle (WIMP) dark matter searches, the electronic recoil background was (1.93 +/- 0.25) x 10(-4) events/(kg x day x keV(ee)), the lowest ever achieved in such a dark matter detector. A profile likelihood analysis shows that the data are consistent with the background-only hypothesis. We derive the most stringent exclusion limits on the spin-independent WIMP-nucleon interaction cross section for WIMP masses above 10 GeV/c(2), with a minimum of 7.7 x 10(-47) cm(2) for 35-GeV/c(2) WIMPs at 90% C.L.

Place, publisher, year, edition, pages
2017. Vol. 119, no 18, 181301
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-148981DOI: 10.1103/PhysRevLett.119.181301ISI: 000413903200005OAI: oai:DiVA.org:su-148981DiVA: diva2:1162377
Available from: 2017-12-04 Created: 2017-12-04 Last updated: 2017-12-04Bibliographically approved

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Bauermeister, BorisCalvén, JakobConrad, JanFerella, Alfredo D.Morå, KnutPelssers, Bart
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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