The “golden channel” decay of subatomic particles called kaons could break or confirm the standard model of particle physics.
It’s the rarest particle decay ever discovered. Scientists have clinched the case for a special type of decay of subatomic particles called kaons. Further study of the rare decay could reveal a potential flaw in the standard model, physicists’ stalwart theory of subatomic particles.
“If it’s not consistent, then it’s a definite sign of new physics,” says Cristina Lazzeroni, a particle physicist working on the experiment. That’s about 50 percent more often than the standard model prediction, says Lazzeroni, of the University of Birmingham in England. But, given the precision of the measurement, “that is still consistent with the standard model, at this moment.”
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