Anomalous Magnetic Moment

研究成果: Chapter

抄録

The magnetic moment of spin-1/2 fermion with mass m and charge e is predicted as μ= e/ 2 m from the Dirac equation. The fermion precesses in magnetic field (B) with angular velocity ωp= eB/ m due to the magnetic moment. On the other hand, the cyclotron frequency of the fermion moving in the same magnetic field is ωc= eB/ m. Since ωc= ωp, the helicity (spin component of the momentum direction) of the fermion conserves in any magnetic field. However, it is observed that there is actually a slight difference between ωc and ωp. The origin of the difference is that the higher order diagrams add very small spin-flipping transition amplitude to the original one and change ωp. This effect is important because we can look new physics out through the additional transition amplitude.

本文言語English
ホスト出版物のタイトルLecture Notes in Physics
出版社Springer Science and Business Media Deutschland GmbH
ページ39-46
ページ数8
DOI
出版ステータスPublished - 2021

出版物シリーズ

名前Lecture Notes in Physics
985
ISSN(印刷版)0075-8450
ISSN(電子版)1616-6361

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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