XENON1T dark matter data analysis: Signal and background models and statistical inference

(XENON Collaboration)

Research output: Contribution to journalArticle

Abstract

The XENON1T experiment searches for dark matter particles through their scattering off xenon atoms in a 2 metric ton liquid xenon target. The detector is a dual-phase time projection chamber, which measures simultaneously the scintillation and ionization signals produced by interactions in target volume, to reconstruct energy and position, as well as the type of the interaction. The background rate in the central volume of XENON1T detector is the lowest achieved so far with a liquid xenon-based direct detection experiment. In this work we describe the response model of the detector, the background and signal models, and the statistical inference procedures used in the dark matter searches with a 1 metric ton×year exposure of XENON1T data, that leads to the best limit to date on WIMP-nucleon spin-independent elastic scatter cross section for WIMP masses above 6 GeV/c2.

Original languageEnglish (US)
Article number112009
JournalPhysical Review D
Volume99
Issue number11
DOIs
StatePublished - Jun 27 2019

Fingerprint

signal analysis
inference
xenon
dark matter
weakly interacting massive particles
detectors
liquids
scintillation
chambers
projection
interactions
ionization
cross sections
scattering
atoms
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

XENON1T dark matter data analysis : Signal and background models and statistical inference. / (XENON Collaboration).

In: Physical Review D, Vol. 99, No. 11, 112009, 27.06.2019.

Research output: Contribution to journalArticle

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abstract = "The XENON1T experiment searches for dark matter particles through their scattering off xenon atoms in a 2 metric ton liquid xenon target. The detector is a dual-phase time projection chamber, which measures simultaneously the scintillation and ionization signals produced by interactions in target volume, to reconstruct energy and position, as well as the type of the interaction. The background rate in the central volume of XENON1T detector is the lowest achieved so far with a liquid xenon-based direct detection experiment. In this work we describe the response model of the detector, the background and signal models, and the statistical inference procedures used in the dark matter searches with a 1 metric ton×year exposure of XENON1T data, that leads to the best limit to date on WIMP-nucleon spin-independent elastic scatter cross section for WIMP masses above 6 GeV/c2.",
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AU - Aprile, E.

AU - Aalbers, J.

AU - Agostini, F.

AU - Alfonsi, M.

AU - Althueser, L.

AU - Amaro, F. D.

AU - Antochi, V. C.

AU - Arneodo, F.

AU - Baudis, L.

AU - Bauermeister, B.

AU - Benabderrahmane, M. L.

AU - Berger, T.

AU - Breur, P. A.

AU - Brown, A.

AU - Brown, E.

AU - Bruenner, S.

AU - Bruno, G.

AU - Budnik, R.

AU - Capelli, C.

AU - Cardoso, J. M.R.

AU - Cichon, D.

AU - Coderre, D.

AU - Colijn, A. P.

AU - Conrad, J.

AU - Cussonneau, J. P.

AU - Decowski, M. P.

AU - De Perio, P.

AU - Di Gangi, P.

AU - Di Giovanni, A.

AU - Diglio, S.

AU - Elykov, A.

AU - Eurin, G.

AU - Fei, J.

AU - Ferella, A. D.

AU - Fieguth, A.

AU - Fulgione, W.

AU - Gallo Rosso, A.

AU - Galloway, M.

AU - Gao, F.

AU - Garbini, M.

AU - Grandi, L.

AU - Greene, Z.

AU - Hasterok, C.

AU - Hogenbirk, E.

AU - Howlett, J.

AU - Iacovacci, M.

AU - Itay, R.

AU - Joerg, F.

AU - Kazama, S.

AU - Kish, A.

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