Effective Field Theory Description of the Pion Form Factor
F. Guerrero, A. Pich
Abstract
Using our present knowledge on effective hadronic theories, short-distance QCD information, the 1/NC expansion, analyticity and unitarity, we derive an expression for the pion form factor, in terms of mπ, mK, Mρ and fπ. This parameter-free prediction provides a surprisingly good description of the experimental data up to energies of the order of 1 GeV.
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