Hadronic decays of mesons and baryons in the Dyson-Schwinger approach

Details Hadronic decays of mesons and baryons in the Dyson-Schwinger approach Hadronic decays of mesons and baryons in the Dyson-Schwinger approach

2011-06-16

arxiv.org/abs/1106.3159v1

Phys.Rev.D84:034012,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevD.84.034012

We study hadronic decays of mesons and baryons in the context of the Dyson-Schwinger equations of QCD. Starting from a well-established effective interaction in rainbow-ladder truncation, we consistently calculate all ingredients of the appropriate decay diagrams. The resulting strong couplings are presented as functions of the quark mass from the chiral limit up to the respective decay thresholds. In particular, we investigate the \rho \pi \pi and for the first time the \Delta N \pi transitions. Both meson and baryon results compare well to available lattice QCD results as well as experimental data and present the first step towards a comprehensive covariant study of hadron resonances in the Dyson-Schwinger approach.

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