Effective Field Theory Description of the Pion Form Factor

Abstract

Using our present knowledge on effective hadronic theories, short-distance QCD information, the $1/N_C$ expansion, analyticity and unitarity, we derive an expression for the pion form factor, in terms of $m_π, m_K, M_ρ$ and $f_π$. This parameter-free prediction provides a surprisingly good description of the experimental data up to energies of the order of 1 GeV.

10 pages, latex, 2 Postscript figures