Experimental Test of the Pion-Nucleon Forward Dispersion Relations at High Energies

K. J. Foley; R. S. Jones; S. J. Lindenbaum; W. A. Love; S. Ozaki; E. D. Platner; C. A. Quarles; E. H. Willen

doi:10.1103/PhysRevLett.19.193

Experimental Test of the Pion-Nucleon Forward Dispersion Relations at High Energies

K. J. Foley, R. S. Jones, S. J. Lindenbaum, W. A. Love, S. Ozaki, E. D. Platner, C. A. Quarles, and E. H. Willen

Phys. Rev. Lett. 19, 193 – Published 24 July 1967; Erratum Phys. Rev. Lett. 19, 622 (1967)

Abstract

We describe a critical test of the pion-nucleon forward dispersion relations up to the highest energies practical at the Brookhaven alternating-gradient synchrotron involving a precise measurement of both the real and imaginary parts of the $π - N$ scattering amplitude. We find that the predictions of the $π - N$ forward dispersion relations are in good agreement with the experiment up to at least 20 BeV/c.