
A dark-matter detector just logged one unexplained event. Why physicists are intrigued, and why it is not a discovery
The LUX-ZEPLIN experiment has recorded a single particle interaction it cannot explain, its most compelling hint of dark matter yet. But at 2.6 sigma, from only about a quarter of its planned data, the team is careful to say it has not found dark matter. Here is what the signal is, and is not.
















