Generalized counting rule and oscillatory scaling

  title={Generalized counting rule and oscillatory scaling},
  author={D. Dutta and H. Gao},
  journal={Physical Review C},
We have studied the energy dependence of the $pp$ elastic scattering data and the pion-photoproduction data at 90$^\circ$ c.m. angle in light of the new generalized counting rule derived for exclusive processes. We show that by including the helicity flipping amplitudes (with energy dependence given by the generalized counting rule) and their interference with the Landshoff amplitude, we are able to reproduce the energy dependence of all cross-section and spin-correlation (A$_{NN}$) data… 

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