Dark Matter Search Results from a One Ton-Year Exposure of XENON1T.

By E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, L. Althueser, F. Amaro, M. Anthony, F. Arneodo, L. Baudis, B. Bauermeister and 108 more. Physical Review Letters, 2018

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We report on a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS. XENON1T utilizes a liquid xenon time projection chamber with a fiducial mass of (1.30±0.01) ton, resulting in a 1.0 ton yr exposure. The energy region of interest, [1.4,10.6] keV_{ee} ([4.9,40.9] keV_{nr}), exhibits an ultralow electron recoil background rate of [82_{-3}^{+5}(syst)±3(stat)] events/(ton yr keV_{ee}). No significant excess over background is found, and a profile likelihood analysis parametrized in spatial and energy dimensions excludes new parameter space for the WIMP-nucleon spin-independent elastic scatter cross section for WIMP masses above 6 GeV/c^{2}, with a minimum of 4.1×10^{-47} cm^{2} at 30 GeV/c^{2} and a 90% confidence level.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/df73708fda80700727d07f371dc50cd07fa9dba9

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Citations in the corpus

Refined bounds on MeV-scale thermal dark sectors from BBN and the CMB (2019, background): “The nature of dark matter is still unknown and thermal relics associated with the electroweak scale are under increasing pressure from the LHC as well as from direct and indirect detection experiments [1–13].”
Search for invisible decays of a Higgs boson produced through vector boson fusion in proton-proton collisions at $\sqrt{s} =$ 13 TeV (2018, methodology): “Limits are computed as a function of mχ and are compared to those from the XENON1T [79], LUX [80], PandaX-II [81], CDMSlite [82], CRESST-II [83], and CDEX-10 [84] experiments.”
Mining for Dark Matter Substructure: Inferring Subhalo Population Properties from Strong Lenses with Machine Learning (2019, background): “Despite an organized effort to do so through terrestrial(e.g., Akerib et al. 2017; Cui et al. 2017; Aprile et al. 2018), astrophysical(e.g., Albert et al. 2017; Chang et al. 2018; Lisanti et al. 2018), and collider(e.g., Sirunyan et al. 2017; Aaboud et al. 2019) searches, no conclusive evidence of…”
Dark Matter through the Higgs portal (2019, methodology): “The dot–dashed blue/magenta/purple curves, represent, according to the previous color code, the constraints from XENON1T and the prospects from XENONnT/LZ and DARWIN.”
AION: an atom interferometer observatory and network (2019, background): “, the constraints from the XENON1T experiment [25]), nor from searches for WIMP production at the LHC or indirect searches for annihilations of astrophysical WIMPs.”
Relaxion stars and their detection via atomic physics (2019, methodology): “This is weaker than the constraint obtained from [5], which we have discussed in Section S2.”
Detecting gravitational waves from cosmological phase transitions with LISA: an update (2019, background): “While searches for leptophilic DM at colliders is notoriously difficult, the whole parameter space is in principle detectable by Xenon1T [198] or other future direct detection experiments.”
Search for dark matter with a 231-day exposure of liquid argon using DEAP-3600 at SNOLAB (2019, neutral): “The 90% confidence upper limit on the spin-independent WIMP-nucleon cross sections based on the analysis presented in this paper (blue), compared to other published limits, including our previous limit [6], SuperCDMS [46], DarkSide-50 [7], LUX [47], PANDAX-II [48], and XENON1T [5].”