Magnetic moment operator of non-Dirac particles and some elements of polarization $ep$-experiments

TL;DR

This paper derives the magnetic moment operator for non-Dirac spin-1/2 particles, highlighting differences from the spin operator and exploring implications for nuclear magnetic moments and polarization experiments.

Contribution

It provides an explicit form of the magnetic moment tensor operator for non-Dirac particles, revealing essential differences from the conventional spin operator.

Findings

Differences between magnetic moment tensor and spin operator for non-Dirac particles

Implications for spin rotation and magnetic moments of nuclei

Impact on modeling azimuthal asymmetry in $ep$-experiments

Abstract

An explicit form of the magnetic moment tensor operator for non-Dirac particles with rest spin 1/2 and its essential difference from the spin operator are established. Possible consequences of the last fact for the description of the spin rotation in the magnetic field and for the values of magnetic moments of some nuclei, as well as the impact of this and other facts on the validity of modelling the azimuthal asymmetry of the secondary-scattered protons in $ep$-experiments are noted.