No. In September 2026, the LUX-ZEPLIN (LZ) dark-matter experiment reported a single anomalous particle interaction that is hard to explain with known backgrounds, but collaboration leaders said they are not claiming a dark-matter discovery.
The new analysis of 220 live days of data reached about 2.6 sigma significance—far below the conventional 5-sigma discovery threshold in particle physics. If the event were a weakly interacting massive particle (WIMP), it would likely have a mass of at least about 200 GeV/c².
LZ, managed by Lawrence Berkeley National Laboratory and running nearly a mile underground at the Sanford Underground Research Facility in South Dakota, continues collecting data to test whether the hint strengthens or fades.