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The muon's magnetic moment fits just fine A new estimate of the strength of the sub-atomic particle's magnetic field aligns with the standard model of particle physics The muon's magnetic moment fits just fine Sam Sholtis April 07, 2021 UNIVERSITY PARK, Pa. — An extensive new calculation of the strength of the magnetic field around the muon — a sub-atomic particle similar to, but heavier than, an electron — closes the gap between theory and experimental measurements, bringing it in line with the standard model that has guided particle physics for decades. A paper describing the research...

 E-Mail IMAGE: Artist's conception of the mystery of the magnetic moment of the muon--a sub-atomic particle similar to, but heavier than, an electron (represented by the Greek letter mu). A new estimate... view more  Credit: Dani Zemba, Penn State A new estimation of the strength of the magnetic field around the muon--a sub-atomic particle similar to, but heavier than, an electron--closes the gap between theory and experimental measurements, bringing it in line with the standard model that has guided particle physics for decades. A paper describing the research by an international t...