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FRAZER 1960
Frazer, W.R.; Fulco, J.R.;
Effect of a Pion Pion Scattering Resonance on Nucleon Structure. II
Phys. Rev. 117 (1960) 1609;
Summary
It is shown that a resonance of suitable position and width in the J = 1, I = 1 state of the pion-pion system can bring the dispersion-theoretic calculation of the isotopic vector part of the nucleon electromagnetic structure into agreement with experiment. The calculation of the isotopic-vector part of the nucleon form factors involves in first approximationthe pion form factor and the matrix element for the production by two pions of a nucleon antinucleon pair. For the pion form factor we
used a semifenomenological solution based on the work of Chew and Mandelstam and involving two parameters related to the position and width of the resonance. For the π π → nucleon anti-nucleon amplitude we used the results of the preceding paper.
Related references
More (earlier) information appears in
W. R. Frazer and J. R. Fulco, Phys. Rev. 117 (1960) 1603;
W. R. Frazer and J. R. Fulco, Phys. Rev. Lett. 2 (1959) 365;
See also
P. Federbush, M. L. Goldberger, and S. B. Treiman, Phys. Rev. 112 (1958) 642;
G. F. Chew, R. Karplus, S. Gasiorowicz, and F. Zachariasen, Phys. Rev. 110 (1958) 265;
W. G. Holliday, Phys. Rev. 101 (1956) 1198;
M. Jacob and G. C. Wick, Ann.Phys. 7 (1959) 404;
S. Mandelstam, Phys. Rev. 112 (1958) 1344;
S. Mandelstam, Phys. Rev. 115 (1959) 1741;
S. Mandelstam, Phys. Rev. 115 (1959) 1752;
Analyse data from
R. Hofstadter, F. Bumiller, and M. R. Yearian, Rev. of Mod. Phys. 30 (1958) 482;
W. D. Walker, J. Davis, and W. D. Shephard, Phys. Rev. 118 (1960) 1612;
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