Search for Coherent Elastic Scattering of Solar Neutrinos in the XENON1T Dark Matter Experiment
E. Aprile (Physics Department, Columbia University, New York, New York 10027, USA); J. Aalbers (Oskar Klein Centre, Department of Physics, Stockholm University, AlbaNova, Stockholm SE-10691, Sweden); F. Agostini (Department of Physics and Astronomy, University of Bologna and INFN-Bologna, 40126 Bologna, Italy); S. Ahmed Maouloud (LPNHE, Sorbonne Université, Université de Paris, CNRS/IN2P3, Paris, France); M. Alfonsi (Institut für Physik & Exzellenzcluster PRISMA, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany); et al - Show all 138 authors
We report on a search for nuclear recoil signals from solar neutrinos elastically scattering off xenon nuclei in XENON1T data, lowering the energy threshold from 2.6 to . We develop a variety of novel techniques to limit the resulting increase in backgrounds near the threshold. No significant neutrinolike excess is found in an exposure of . For the first time, we use the nondetection of solar neutrinos to constrain the light yield from 1–2 keV nuclear recoils in liquid xenon, as well as nonstandard neutrino-quark interactions. Finally, we improve upon world-leading constraints on dark matter-nucleus interactions for dark matter masses between 3 and by as much as an order of magnitude.
