Spin rotation as an element of polarization experiments on elastic electron-proton scattering

Abstract

The validity of some rules in the classical theory of spin, which are followed by the Bargmann--Michel--Telegdi formula for a relativistic particle spin rotation in a constant homogeneous magnetic field, is analyzed. In the framework of the quantum theory, we give examples where these rules are violated. Consequences for polarization experiments are discussed.

Comments: 9 pages, no figures, published version