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A low-mass dark matter search using ionization signals in XENON100

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arxiv 1605.06262 v4 pith:TJHFOKMN submitted 2016-05-20 astro-ph.CO hep-exhep-phphysics.ins-det

classification astro-ph.COhep-exhep-phphysics.ins-det
keywords signaldarkenergymattercrossdetectioneventionization
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

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 $1.4 \times 10^{-41}$\,cm$^2$ at 90\% confidence level.

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Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. HydroX, a light dark matter search with hydrogen-doped liquid xenon time projection chambers

    hep-ex 2025-05 conditional novelty 7.0 of 10

    HydroX, a proposed hydrogen-doped liquid xenon TPC, projects sensitivity to sub-GeV dark matter through enhanced proton-recoil signals in a large xenon detector.

  2. Light Dark Matter Detection with Sub-eV Transition-Edge Sensors

    hep-ph 2025-06 conditional novelty 6.0 of 10

    Optical transition-edge sensors with sub-eV thresholds are projected to probe unexplored light dark matter parameter space with nanogram-month exposures.

  3. Many-body atomic response functions of xenon and germanium for leading-order sub-GeV dark matter-electron interactions in effective field theory

    astro-ph.CO 2024-12 conditional novelty 6.0 of 10

    The authors provide full (MC)RRPA atomic response functions for xenon and germanium for sub-GeV dark matter-electron scattering, and report a low-energy spin-dependent response distinct from the spin-independent one.

  4. Searching for a solar relaxion/scalar with XENON1T and LUX

    hep-ph 2019-09 conditional novelty 6.0 of 10

    XENON1T S2 data constrain the solar scalar-electron coupling below 2e-15 at 90% CL, about three times weaker than the best stellar cooling bound.

  5. On the relation between Migdal effect and dark matter-electron scattering in isolated atoms and semiconductors

    hep-ph 2019-08 conditional novelty 6.0 of 10

    The Migdal ionization rate from dark matter-nucleus scattering equals the dark matter-electron ionization form factor evaluated at momentum q_e = (m_e/m_N) q, enabling the first semiconductor Migdal estimate and new s...

  6. Absorption of Fermionic Dark Matter by Nuclear Targets

    hep-ph 2019-08 conditional novelty 6.0 of 10

    Fermionic dark matter absorbed by nuclei produces neutral-current recoil peaks, charged-current induced beta decays, and beta endpoint shifts, giving current and future experiments new ways to probe sub-GeV dark matter.

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