Hadronic coupling constants in lattice QCD

Abstract

We report on calculations of the hadronic coupling constants $g_{\rho \pi \pi }$ and $g_{nn\pi }$ based on lattice QCD with four flavors of dynamical staggered fermions. By computing 2--point and 3--point Green's functions we have been able to determine these coupling constants ab initio from QCD; the results are compatible with the experimental values.

Comments: 3 Pages