Registry · Definition
IV.D368
established
skeleton
IV.D368 — Anomalous Magnetic Moment Definition
The anomalous magnetic moment a_ℓ = (g_ℓ−2)/2 of a charged lepton. For a structureless Dirac particle g=2 exactly; a_ℓ≠0 arises from virtual corrections to the electromagnetic vertex.
Book IV
Part 2
Ch. 20