2 research outputs found
Electromagnetic Pion Form Factor and Neutral Pion Decay Width
The electromagnetic pion form factor, , is calculated for
spacelike- in impulse approximation using a confining quark propagator,
, and a dressed quark-photon vertex, , obtained from realistic,
nonperturbative Dyson-Schwinger equation studies. Good agreement with the
available data is obtained for and other pion observables,
including the decay . This calculation
suggests that soft, nonperturbative contributions dominate at
presently accessible~.Comment: 25 pages, LaTeX, elsart.sty, 5 figures, To appear in Nucl. Phys.