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Physicists spellbound by deepening mystery of muon particle’s magnetism

Theoretical predictions move closer to experimental results, but questions remain about possible gaps in the standard model of particle physics.
  1. Davide Castelvecchi
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The muon’s mysteries continue to leave physicists spellbound. Last year, an experiment suggested that the elementary particle had inexplicably strong magnetism, possibly breaking a decades-long streak of victories for the leading theory of particle physics, known as the standard model. Now, revised calculations by several groups suggest that the theory’s prediction of muon magnetism might not be too far away from the experimental measurements after all.

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doi: https://doi.org/10.1038/d41586-022-01810-z

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