The Generalized Counting Rule and Oscillatory Scaling

Abstract

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 available above the resonance region. The pion-photoproduction data can also be described by this approach, but in this case data with much finer energy spacing is needed to confirm the oscillations about the scaling behavior.

5 pages, 4 figs, submitted to PRC rapid comm

References in corpus (4)

• Light-Front Hadron Dynamics and AdS/CFT Correspondence
• The covariant structure of light-front wave functions and the behavior of hadronic form factors
• Onset of asymptotic scaling in deuteron photodisintegration
• Complete Angular Distribution Measurements of Two-Body Deuteron Photodisintegration between 0.5 and 3 GeV

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• Polarization components in ${\pi }^0$ photoproduction at photon energies up to 5.6 GeV
• The AdS/QCD Correspondence and Exclusive Processes
• SPIN Physics at GSI