Dashen's theorem and electromagnetic masses of the mesons
Dao-Neng Gao, Mu-Lin Yan, Bing-An Li
Abstract
Employing U(3)L× U(3)R chiral field theory, we find that Dashen's theorem, which holds for pseudoscalar mesons, can be generalized to the sector of axial-vector mesons, however, fails for vector mesons.
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