Low-mass dark matter search using ionization signals in XENON100
By E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, F. Amaro, M. Anthony, F. Arneodo, P. Barrow, L. Baudis, B. Bauermeister and 101 more. 2016
139 citations recorded by the source corpus.
We perform a low-mass dark matter search using an exposure of 30 kg$\times$yr with the XENON100 detector. By dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we lowered the energy threshold for detection to 0.7 keV for nuclear recoils. No dark matter detection can be claimed because a complete background model cannot be constructed without a primary scintillation signal. Instead, we compute an upper limit on the WIMP-nucleon scattering cross section under the assumption that every event passing our selection criteria could be a signal event. Using an energy interval from 0.7 keV to 9.1 keV, we derive a limit on the spin-independent WIMP-nucleon cross section that excludes WIMPs with a mass of 6 GeV/$c^2$ above $1.2 \times 10^{-41}$ cm$^2$ at 90\% confidence level.
Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/53f581bd4dff3c9283780a854a1bd59f9ce726f8
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Citations in the corpus
- Physics beyond colliders at CERN: beyond the Standard Model working group report (2019, methodology): “(3) XENON 10/100: DM-electron scattering searches have already illustrated their potential, probing down to mχ > 5MeV [218, 219] using XENON10 data [224] sensitive to single electrons and down to mχ > 35MeV [219] using XENON100 data [225].”
- Direct detection of strongly interacting sub-GeV dark matter via electron recoils (2019, methodology): “The observation of ‘S2-only’ events in XENON10 [58] and XENON100 [59] data were used to derive bounds on the DM-electron scattering cross section in [5, 25].”
- Low-mass dark matter search with CDMSlite (2017, background): “) (thick black solid curve) upper limit from CDMSlite Run 2 is compared to other selected direct-detection limits from PANDAX-II (thick-green dotted curve) [61], LUX (thick-green dotdashed curve) [62], XENON100 (thick-green dashed curve) [63], PICO-60 (magenta upward triangles) [64], PICO-2L (magent”