The problem is, we don't which it is.
The 17-mile-long underground particle smasher called the Large Hadron Collider restarted in 2015 and began smashing particles together at a higher energy level than humans have ever reached before. And in December, two different detectors at the LHC both spotted the same strange fluctuation, which physicists say could hint at the existence of a brand-new subatomic particle.
"Fluctuations come and go in our field — that's why we're very wary of saying anything," James Beacham, an experimental physicist who works with the LHC, said in a phone interview in March. "We've seen bumps go away very quickly."
But if that fluctuation turns out to be a new particle, physics will never be the same.
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