Anomalous Quark Chromomagnetic Moment Induced by Instantons
N. I. Kochelev
Abstract
It is shown that the quark-gluon interaction induced by instantons leads to the quark anomalous chromomagnetic moment. In the instanton-liquid model for the QCD vacuum, the chromomagnetic moment is μa=-πf2αs, where f is the packing fraction of instantons in the vacuum.
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