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Last year, a group of Hungarian researchers reported the possible discovery of a new type of subatomic particle. Scientists identified a radioactive decay anomaly among the results of their particle acceleration experiments.
The anomaly suggested the presence of light particle 30 times heavier than an electron. The goal of those experiments was to find dark matter, but scientists weren't sure exactly what kind of particle they'd observed.
"The experimentalists weren't able to claim that it was a new force," Jonathan Feng, professor of physics and astronomy at the University of California, Irvine, said in a press release. "They simply saw an excess of events that indicated a new particle, but it was not clear to them whether it was a matter particle or a force-carrying particle."
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