Phys. Rev. Lett. 21, 12791282 (1968); DOI: 10.1103/PhysRevLett.21.1279

Pi-zero Photoproduction from Complex Nuclei

W. T. Meyer, A. Browman, K. M. Hanson, A. Osborne, A. Silverman, F. E. Taylor, and N. Horwitz


The photoproduction yields of pi 0 mesons from D2, Be, C, Al, Cu, Ag, and Pb targets have been measured at peak bremsstrahlung energies of 4.25, 5.6, 7.8, and 9.6 GeV. The A dependence of pi-sero photoproduction is found to be almost independent of energy in this range in contrast to vector-meson dominance predictions.

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