SLAC PUB 404 April 1968 DIFFERENCE OF NUCLEON AND PION ELECTROMAGNETIC RADII*
نویسندگان
چکیده
The nucleon isovector Pauli radius, < R 2 2v >, is calculated using sidewise dispersion relations to be significantly larger than the predictions of p d.ominance, in accord with observation. It is also predicted that < Riv> is significantly larger than the pion charge radius, < R,” > . Elastic scattering of pions from electrons at very high energies (viz. Serpukhov) will give a clear confrontation with this prediction. In this note we report on the application of sidewise dispersion relations to the calculation of the electromagnetic structure of nucleons. This formulation of the dispersion relation of the electromagnetic vertex as a. function of the nucleon mass was developed first by Bincerl and expresses the appropriate form factor as
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