Pion Observables and QCD

Abstract

The nonperturbative, Dyson-Schwinger equation approach to solving QCD provides a straightforward, microscopic description of dynamical chiral symmetry breaking and confinement. It is an ideal tool for the study of pion observables. This is illustrated via its application to the calculation of: the $\pi$-$\pi$ scattering lengths $a_0^0$, $a_0^2$, $a_1^1$, $a_2^0$, $a_2^2$ and associated partial wave amplitudes; the ${\pi }^0\to \gamma \gamma$ decay width; and the charged pion form factor, $F_{\pi }(q^2)$.

Comments: Summary of a presentation at the workshop ``Chiral Dynamics: Theory and Experiment'', Cambridge MA 25-29 July, 1994. 10 Pages. 4 Figures, incorporated via extras/epsfig and available as PostScript with this file. Standard LaTeX plus ``citews.sty'', which is appended to the file. ANL Preprint: PHY-7854-TH-94