## First WIMP Dark Matter Results from LUX-ZEPLIN (LZ)

Speak: Qing Xia(Chamberlain Fellow)

Time: 2022, Sep 08, 10:00 (Tencent Meeting: 564-8996-4099)

Abstract: The LZ experiment utilizes 7 tonnes of active liquid xenon to search for dark matter at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. It is a low-background, multi-detector experiment centered on a dual-phase time projection chamber, aiming to detect xenon nuclear recoil signals induced by Weakly Interacting Massive Particles (WIMPs). In this seminar, I will present the first results from LZ's search for WIMPs using 60 live days of data. The analysis shows the data is consistent with a background-only hypothesis, and sets the strictest limits so far on WIMP-nucleon cross-sections for WIMP masses above 9 $\mathrm{GeV}/c^2$.