K_{l4} decays

Details K_{l4} decays K_{l4} decays

2000-01-25

arxiv.org/abs/hep-ph/0001258v1

Eur.Phys.J. A10 (2001) 237-244

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages including 12 figures

Scientific paper

10.1142/S0217751X01006401

An effective theory of large N_{C} QCD of mesons has been used to study six K_{l4} decay modes. It has been found that the matrix elements of the axial-vector current dominate the K_{l4} decays. PCAC is satisfied. A relationship between three form factors of axial-vector current has been found. Non-zero phase shifts are originated in \rho-->\pi\pi. The decay rates are calculated in the chiral limit. In this study there is no adjustable parameter.

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