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8 billion wobbling muons just put particle theory on notice

Florida International University Search May 9, 2021 at 9:52am Jason Bono was one of the researchers behind a major scientific moment when tiny particles unexpectedly unraveled one of the most important and successful theories in physics. Bono, who earned his Ph.D. in physics from FIU in 2014, was part of an international team of 160 physicists who worked on the Muon g-2 experiment at the U.S. Department of Energy’s Fermi National Accelerator Laboratory. They found these tiny particles called muons may be interacting with undiscovered particles or forces. So what does that mean? There may be a fifth fundamental force of nature. This could upend what we know about particle physics, launching a new era of breakthroughs that would advance our current understanding of the universe.

Muons don t stick to the Standard Model of particle physics

Fundamental particles called muons behave in a way that scientists’ best theory to date, the Standard Model of particle physics, doesn’t predict, researchers report. The finding comes from the first results from the Muon g-2 experiment at the US Department of Energy’s Fermi National Accelerator Laboratory. “This experiment is a bit like a detective story.” This landmark result confirms a discrepancy that has been gnawing at researchers for decades. The strong evidence that muons deviate from the Standard Model calculation might hint at exciting new physics. The muons in this experiment act as a window into the subatomic world and could be interacting with yet-undiscovered particles or forces.

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