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arXiv · 1009.3458

Dressed-quark anomalous magnetic moments

Lei Chang·Yu-Xin Liu·Craig D. Roberts
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Abstract

Perturbation theory predicts that a massless fermion cannot possess a measurable magnetic moment. We explain, however, that the nonperturbative phenomenon of dynamical chiral symmetry breaking generates a momentum-dependent anomalous chromomagnetic moment for dressed light-quarks, which is large at infrared momenta; and demonstrate that consequently these same quarks also possess an anomalous electromagnetic moment with similar magnitude and opposite sign.

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Lei Chang, Yu-Xin Liu, Craig D. Roberts. 2010-09-17. Dressed-quark anomalous magnetic moments. https://doi.org/10.1103/physrevlett.106.072001

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