期刊
PHYSICAL REVIEW LETTERS
卷 106, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.072001
关键词
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资金
- National Natural Science Foundation of China [10425521, 10705002, 10935001]
- Major State Basic Research Development Program [G2007CB815000]
- United States Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]
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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