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SUMMARY:A surprising result in the search for high-energy dark matter inte
 ractions with the LUX-ZEPLIN (LZ) dark matter experiment
DTSTART:20260923T010000Z
DTEND:20260923T020000Z
DTSTAMP:20261015T170900Z
UID:indico-event-2961@indico.phys.hawaii.edu
DESCRIPTION:Speakers: David Woodward (Lawrence Berkeley National Laborator
 y)\n\nLZ is a dark matter experiment operating at the Sanford Underground 
 Research Facility in Lead\, SD. The experiment is centered on a time proje
 ction chamber (TPC) that utilizes a 7-tonne liquid xenon target to directl
 y observe possible dark matter interactions\, along with two veto detector
 s to tag backgrounds. LZ has previously published world-leading limits on 
 Weakly Interacting Massive Particles (WIMPs)\, assuming interactions that 
 produce low-energy nuclear recoils in the energy range O(1-10 keV). Howeve
 r\, some models predict interactions where low-energy scatters are suppres
 sed and high-energy nuclear recoils (> 100 keV) are dominant\, a region wh
 ere LZ has particularly low background rates. In this talk\, I will descri
 be a recent analysis of 220 live days of LZ data that found a single event
  consistent with a ~250 keV nuclear recoil\, in significant tension with o
 ur background models.\n\nhttps://indico.phys.hawaii.edu/event/2961/
LOCATION:Room 420 (Watanabe Hall)
URL:https://indico.phys.hawaii.edu/event/2961/
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