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SUMMARY:One event - and now? An overview of LZ’s recent high-energy resu
 lts
DTSTART:20261008T050000Z
DTEND:20261008T060000Z
DTSTAMP:20260929T054500Z
UID:indico-event-18961@indico.global
DESCRIPTION:Speakers: Theresa Fruth (University of Sydney)\n\nLUX-ZEPLIN (
 LZ) is a dark matter direct detection experiment located at the Sanford Un
 derground Research Facility in Lead\, South Dakota. At the heart of the de
 tector is a dual-phase time projection chamber containing 7 tonnes of acti
 ve liquid xenon. With a combined exposure of 4.2 tonne-years from the firs
 t two science campaigns\, LZ has placed the most stringent limits on the s
 pin-independent WIMP-nucleon cross section\, down to 2.2 x 10^-48 cm^2 for
  a 40 GeV/c^2 WIMP mass. More surprisingly\, in a search for effective fie
 ld theory and inelastic dark matter models with an extended energy window 
 up to 270 keV\, LZ has now observed one event with a characteristic energy
  consistent with a nuclear recoil of 248 ±23 (stat) ±23 (sys) keV\, in a
  region where the known background expectation is low. A profile likelihoo
 d ratio test finds tension with the background-only hypothesis at a global
  significance of 2.6σ when accounting for look-elsewhere effects\, with a
  maximum local significance of 3.4σ across the models tested. In this tal
 k\, I will discuss the analysis\, the backgrounds considered and what come
 s next.\n\nhttps://indico.global/event/18961/
URL:https://indico.global/event/18961/
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