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arXiv · hep-ph/9610444

Axial-vector currents and tau mesonic decays

Bing An Li
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Abstract

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.

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Bing An Li. 1996-10-22. Axial-vector currents and tau mesonic decays. https://doi.org/10.1016/s0920-5632(97)00217-x

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