Dressed-quark anomalous magnetic moments

Details Dressed-quark anomalous magnetic moments Dressed-quark anomalous magnetic moments

2010-09-17

arxiv.org/abs/1009.3458v1

Phys.Rev.Lett.106:072001,2011

Physics

Nuclear Physics

Nuclear Theory

4 pages, 1 2-panel figure

Scientific paper

10.1103/PhysRevLett.106.072001

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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