Electromagnetic pion form factor and neutral pion decay width
Abstract
The electromagnetic pion form factor, F_{π}( q^{2}), is calculated for spacelike q^{2} in impulse approximation using a confining quark propagator, S, and a dressed quarkphoton vertex, Γ_{μ}, obtained from realistic, nonperturbative DysonSchwinger equation studies. Good agreement with the available data is obtained for F_{π}( q^{2}) and other pion observables, including the decay π^{0} → γγ. This calculation suggests that soft, nonperturbative contributions dominate F_{π}( q^{2}) at presently accessible q^{2}.
 Publication:

Nuclear Physics A
 Pub Date:
 February 1996
 DOI:
 10.1016/03759474(96)001741
 arXiv:
 arXiv:hepph/9408233
 Bibcode:
 1996NuPhA.605..475R
 Keywords:

 High Energy Physics  Phenomenology;
 Nuclear Theory
 EPrint:
 25 pages, LaTeX, elsart.sty, 5 figures, To appear in Nucl. Phys. A