Abstract
A model has been constructed of the interaction between two protons and applied to the calculation of spin-dependent elastic-scattering parameters over a range of beam momenta from 3 to 24 GeV/c. The interaction is one-boson exchange, augmented by a zero-range core and an imaginary potential to model absorption into inelastic channels. The model provides excellent agreement with experimental measurements of the unpolarized differential cross section, and reproduces the qualitative features of the transverse asymmetry and spin correlation. The absorptive potential is found to dominate the real potential, greatly attenuating the low partial waves. This suggests that perturbative quantum chromodynamics does not apply to elastic scattering at the energy scale examined here, since absorptive effects prevent the quarks from approaching to appropriately small separations.
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