Show simple item record Amole, Chanpreet Levine, Ilan 2021-01-26T14:57:02Z 2021-01-26T14:57:02Z 2019-10
dc.identifier.citation Amole, C., et al. “Data-driven Modeling of Electron Recoil Nucleation in PICO C3F8 Bubble Chambers.” Physical Review D, vol. 100, no. 8, Oct. 2019, p. 082006+, doi:10.1103/PhysRevD.100.082006. en
dc.description.abstract The primary advantage of moderately superheated bubble chamber detectors is their simultaneous sensitivity to nuclear recoils from weakly interacting massive particle (WIMP) dark matter and insensitivity to electron recoil backgrounds. A comprehensive analysis of PICO gamma calibration data demonstrates for the first time that electron recoils in C3F8 scale in accordance with a new nucleation mechanism, rather than one driven by a hot spike as previously supposed. Using this semiempirical model, bubble chamber nucleation thresholds may be tuned to be sensitive to lower energy nuclear recoils while maintaining excellent electron recoil rejection. The PICO-40L detector will exploit this model to achieve thermodynamic thresholds as low as 2.8 keV while being dominated by single-scatter events from coherent elastic neutrino-nucleus scattering of solar neutrinos. In one year of operation, PICO-40L can improve existing leading limits from PICO on spin-dependent WIMP-proton coupling by nearly an order of magnitude for WIMP masses greater than 3 GeV c-2 and will have the ability to surpass all existing non-xenon bounds on spin-independent WIMP-nucleon coupling for WIMP masses from 3 to 40 GeV c-2
dc.format.extent 20 pages
dc.format.mimetype PDF
dc.language.iso en en
dc.publisher American Physical Society en
dc.subject.lcsh Dark matter (Astronomy) -- Measurement
dc.title Data-driven Modeling of Electron Recoil Nucleation in PICO C3F8 Bubble Chambers en
dc.type Article en

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