articlePhysical Review LettersOct 13, 2022HYBRID OA

Search for New Physics in Electronic Recoil Data from XENONnT

Columbia University · Kavli Institute for the Physics and Mathematics of the Universe · +36 more institutions

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Abstract

We report on a blinded analysis of low-energy electronic recoil data from the first science run of the XENONnT dark matter experiment. Novel subsystems and the increased 5.9 ton liquid xenon target reduced the background in the (1, 30) keV search region to (15.8±1.3) events/(ton×year×keV), the lowest ever achieved in a dark matter detector and ∼5 times lower than in XENON1T. With an exposure of 1.16 ton-years, we observe no excess above background and set stringent new limits on solar axions, an enhanced neutrino magnetic moment, and bosonic dark matter.

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