The Xenon 1T experiment may have found signs of a previously undetected dark matter particle.
An experiment searching for signs of elusive dark matter has detected an unexplained signal.
There are three potential explanations for the new signal from the Xenon1T experiment. Two require new physics to explain, while one of them is consistent with a hypothesised dark matter particle called a solar axion. When a particle crosses the target, it can generate tiny flashes of light and free electrons from a xenon atom.
Scientists carefully estimated the number of background events in Xenon1T. They expected to see roughly 232, but the experiment instead saw 285 - an excess of 53 events.
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