Physics reach of the XENON1T dark matter experiment.

By E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, F. Amaro, M. Anthony, L. Arazi, F. Arneodo, C. Balan, P. Barrow and 105 more. 2015

548 citations recorded by the source corpus.

The XENON1T experiment is currently in the commissioning phase at the Laboratori Nazionali del Gran Sasso, Italy. In this article we study the experiment's expected sensitivity to the spin-independent WIMP-nucleon interaction cross section, based on Monte Carlo predictions of the electronic and nuclear recoil backgrounds. The total electronic recoil background in 1 tonne fiducial volume and (1, 12) keV electronic recoil equivalent energy region, before applying any selection to discriminate between electronic and nuclear recoils, is (1.80 ± 0.15) · 10−4 (kg·day·keV)−1, mainly due to the decay of 222Rn daughters inside the xenon target. The nuclear recoil background in the corresponding nuclear recoil equivalent energy region (4, 50) keV, is composed of (0.6 ± 0.1) (t·y)−1 from radiogenic neutrons, (1.8 ± 0.3) · 10−2 (t·y)−1 from coherent scattering of neutrinos, and less than 0.01 (t·y)−1 from muon-induced neutrons. The sensitivity of XENON1T is calculated with the Profile Likelihood Ratio method, after converting the deposited energy of electronic and nuclear recoils into the scintillation and ionization signals seen in the detector. We take into account the systematic uncertainties on the photon and electron emission model, and on the estimation of the backgrounds, treated as nuisance parameters. The main contribution comes from the relative scintillation efficiency ℒeff, which affects both the signal from WIMPs and the nuclear recoil backgrounds. After a 2 y measurement in 1 t fiducial volume, the sensitivity reaches a minimum cross section of 1.6 · 10−47 cm2 at mχ = 50 GeV/c2.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ec3caa1db16a8cca93c6a9d961e1728d7291ff13

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Citations in the corpus

Recommendations on presenting LHC searches for missing transverse energy signals using simplified s-channel models of dark matter (2016, methodology): “XENON1T will soon begin its first run and aims to have first results in late 2016.”
Toward (finally!) ruling out Z and Higgs mediated dark matter models (2016, background): “The only currently viable region (mχ = 56–62 GeV is expected to be probed in the near future by XENON1T [6].”
XENON100 dark matter results from a combination of 477 live days (2016, unknown): “A second novel selection criterion was determined from an improved S1 and S2 classification algorithm [20], initially developed for the next-generation experiment XENON1T [21].”
First Dark Matter Search Results from the XENON1T Experiment. (2017, unknown): “First, our background model includes ERs, primarily from β decays of 85 Kr and the intrinsic 222 Rn-progeny 214 Pb, which cause a flat energy spectrum in the energy range of interest [9].”
DARWIN: towards the ultimate dark matter detector (2016, background): “However, purification in the gas phase by means of hot zirconium getters at flow rates reaching up to ∼100 slpm (corresponding to 880 kg/day) has been achieved in the XENON1T R&D programme, using effective heat exchangers [120].”
WIMP dark matter candidates and searches—current status and future prospects (2017, background): “e falls within reach of tonne-scale underground detectors, which we summarize here schematically with the dashed purple line giving, technically, the projected 2-year sensitivity of XENON1T from Ref. [187]. It is worth emphasizing that the ˘1TeV higgsino region emerges as a robust solution in a much”
What can be learned from a future supernova neutrino detection (2017, background): “Dual-phase xenon experiments have several advantages over competing direct dark matter detection technologies: the large neutron number of xenon yields a large coherent scattering cross section, they are sensitive down to low (sub-keV) recoils, they have achieved low background rates, they have exce”