LUX-ZEPLIN Detector Records Possible Dark Matter Signal
A potential initial indication of dark matter has been detected by an underground sensor in South Dakota. The LUX-ZEPLIN (LZ) experiment observed an unusual interaction within 220 days of data gathered from March 2023 to April 2024, which may be attributed to a weakly interacting massive particle (WIMP). Should this be validated, the WIMP's mass would surpass 200 times that of a proton; however, there remains a 0.5% probability that the signal arises from recognized background processes, falling short of the criteria for formal discovery. The results were revealed on September 1, 2026, during the TeV Particle Astrophysics conference in Japan. The research team, headed by Sam Eriksen, intends to publish their findings in Physical Review Letters.
Key facts
- LUX-ZEPLIN (LZ) detector in South Dakota recorded an unusual event possibly caused by dark matter.
- Event found in 220 days of data collected between March 2023 and April 2024.
- Findings announced September 1, 2026, at TeV Particle Astrophysics conference in Japan.
- Paper posted on arXiv; planned submission to Physical Review Letters.
- If dark matter, the WIMP's mass would be >200 times that of a proton.
- Statistical chance of background explanation: ~0.5%.
- Dark matter makes up ~85% of universe's matter.
- LZ detector uses liquid xenon and sits ~1 mile underground.
- Early dark matter clues from Fritz Zwicky (Coma cluster) and Vera Rubin (galaxy rotation).
- Reactions: Dan Hooper cautious, Katherine Freese excited.
Entities
Artists
- Sam Eriksen
- Richard Gaitskell
- Dan Hooper
- Nicole Bell
- Katherine Freese
- Wick Haxton
- Fritz Zwicky
- Vera Rubin
Institutions
- LUX-ZEPLIN (LZ) dark matter experiment
- University of Bristol
- Brown University
- University of Wisconsin-Madison
- University of Melbourne
- University of Texas at Austin
- University of California, Berkeley
- Sanford Underground Research Facility
- SLAC National Accelerator Laboratory
- Physical Review Letters
- arXiv
- TeV Particle Astrophysics conference
- Reuters
- New York Times
- Science News
- Australian Broadcasting Corporation
- Science
Locations
- South Dakota
- United States
- Japan
- England
- Australia