Prog. Theor. Phys. Vol. 36 No. 6 (1966) pp. 1150-1153
The Algebra of Currents and the Meson Form Factors
International Atomic Energy Agency, International Centre for Theoretical Physics, Trieste, Italy
(Received June 18, 1966)
The equal time commutation relation for the electromagnetic current is used to derive a sum rule for the pion form factor following the covariant method of Fubini. It is shown that the inclusion of pion, ω-meson and A1-meson (1+) intermediate states gives a charge radius of the pion in agreement with the recent experimental data.
DOI : 10.1143/PTP.36.1150
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