Anomalous Magnetic Moment of Lepton and Quantum Electrodynamics

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Other Title
  • レプトンの異常磁気能率と量子電気力学 (解説)
  • レプトンの異常磁気能率と量子電気力学
  • レプトン ノ イジョウ ジキ ノウリツ ト リョウシ デンキ リキガク

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Abstract

The anomalous magnetic moment, or g-2, of the electron was discovered in 1947 and was shown to be a quantum-field-theoretic effect in 1948. Since then, precision of both experiment and theory have been greatly improved. The relative uncertainty of electron g-2 is now about 10^<-9>. The muon g-2 was also measured precisely and reached the relative uncertainty of 10^<-6>. Comparing theory and experiment in such a high precision, we might be able to detect a hint of new physics beyond the Standard Model of elementary particles.

Journal

  • Butsuri

    Butsuri 61 (8), 565-572, 2006-08-05

    The Physical Society of Japan

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