Physicists may soon know if a potential new subatomic particle is something beyond their wildest dreams — or if it exists at all.
Hints of the new particle emerged last December at the Large Hadron Collider. Theorists have churned out hundreds of papers attempting to explain the existence of the particle —assuming it’s not a statistical fluke. Scientists are now beginning to converge on the most likely explanations.
“If this thing is true, it’s huge. It’s very different than what the last 30 years of particle physics looked like,” says theoretical physicist David Kaplan of Johns Hopkins University.
The speculation was triggered by a subtle wiggle in data from two experiments, ATLAS and CMS, at the Large Hadron Collider at CERN (SN: 1/9/16, p. 7). The bump suggests a new particle that decays into two photons, but what that particle might be is unclear — its properties don’t line up with scientists’ expectations.
“I’m not aware of anybody who’d predicted the existence of such a particle,” says John Ellis of King’s College London. “There’s a dish on the table that nobody can remember ordering.”
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