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Evidence of new physics


MSU researchers help Fermilab’s Muon g-2 experiment observe unexpected behavior from fundamental particles
Michigan State University researchers have helped catch particles called muons behaving in a way that’s not predicted by the Standard Model of particle physics the best theory that scientists have for explaining the universe’s fundamental particles and forces.
 
This deviation hints that there’s new physics yet to explore, such as undiscovered particles or forces.
 
The Muon g-2 magnet ring sits in its detector hall amidst electronics racks and other equipment. The experiment operates at negative 450 degrees Fahrenheit. Photo courtesy of Fermilab.
“The first results from an experiment at Fermi National Accelerator Laboratory show strong evidence that our understanding of the subatomic world is incomplete,” said Martin Berz, a professor in the Department of Physics and Astronomy in MSU’s College of Natural Science. Fermilab, which is ....

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First Results from Fermilab's Muon g-2 Experiment Strengthen Evidence of New Physics | Office of News & Media Relations


UMass Amherst researchers contribute to landmark findings
April 7, 2021
David Flay examines the Muon g-2 plunging probe installation. Photo courtesy DOE.
AMHERST, Mass. – The long-awaited first results from the Muon g-2 experiment at the U.S. Department of Energy’s Fermi National Accelerator Laboratory show fundamental particles called muons behaving in a way that is not predicted by scientists’ best theory, the Standard Model of particle physics. This landmark result, made with unprecedented precision and to which UMass Amherst’s David Kawall’s research group  made key contributions, confirms a discrepancy that has been gnawing at researchers for decades.
“Today is an extraordinary day, long awaited not only by us but by the whole international physics community,” said Graziano Venanzoni, co-spokesperson of the Muon g-2 experiment and physicist at the Italian National Institute for Nuclear Physics. “A large amount of credit goes to our ....

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