%0 Journal Article
%T Axial-vector currents and tau mesonic decays
%A Bing An Li
%J Physics
%D 1996
%I arXiv
%R 10.1016/S0920-5632(97)00217-X
%X A general expression of the axial-vector current is presented, in which both the effects of the chiral symmetry breaking and the spontaneous chiral symmetry breaking are included. A new resonance formula of the axial-vector meson is derived and in the limit of $q^{2}\rightarrow 0$ this formula doesn't go back to the ``chiral limit``. The studies show that the dominance of the axial-vector meson is associated with the satisfaction of PCAC. The dominance of pion exchange is companied by the strong anomaly of PCAC.
%U http://arxiv.org/abs/hep-ph/9610444v1