Anomalous chromomagnetic moment of quarks

Abstract

We do a perturbative calculation of the anomalous chromomagnetic dipole moment (CMDM) of quarks at one-loop, considering the effect of a small mass of the gluon. We find partial agreement with a previous calculation, as well as a divergence. We explain these results by noting that perturbation theory is not valid at the energy scales where these calculations were done, and proceed to give the results at the [Formula: see text] scale. We find significant variation, of the anomalous moment of the light quarks, as a function of gluon mass.