K_{l3} transition form factors

Details K_{l3} transition form factors K_{l3} transition form factors

2001-02-23

arxiv.org/abs/nucl-th/0102057v1

Phys.Rev. D64 (2001) 014032

Physics

Nuclear Physics

Nuclear Theory

8 pages, 3 figures, Revtex

Scientific paper

10.1103/PhysRevD.64.014032

The rainbow truncation of the quark Dyson-Schwinger equation is combined with the ladder Bethe-Salpeter equation for the meson bound state amplitudes and the dressed quark-W vertex in a manifestly covariant calculation of the K_{l3} transition form factors and decay width in impulse approximation. With model gluon parameters previously fixed by the chiral condensate, the pion mass and decay constant, and the kaon mass, our results for the K_{l3} form factors and the kaon semileptonic decay width are in good agreement with the experimental data.

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