Corrections to the Glauber model for intermediate energy proton-alpha elastic scattering

S. K. Young and C. W. Wong
Phys. Rev. C 15, 2146 – Published 1 June 1977
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Abstract

Corrections to the Glauber model for intermediate energy proton-α elastic scattering have been calculated at the lab energies KL=0.58,1,and2.1 GeV using the multiple diffraction expansion formalism. In this expansion, the Glauber amplitude appears as a leading term in a perturbation series. Leading corrections due to (i) wave spreading (noneikonal), (ii) internal excitation (recoil), as well as (iii) zero-point motion (different Galilean frames) effects are obtained in a simple model. Their structures are analyzed and their energy dependences are examined. The wave-spreading and internal-excitation corrections agree with those obtained by Wallace. The use of Wallace's relativistic kinematics changes the differential cross section significantly. A new zero-point motion correction is found to be important. A simple dependence of the results on the sign of ρ (RefImf of the NN scattering amplitude) is pointed out. The relative importance of these corrections decreases as energy increases, as expected. The significance of our results is briefly discussed.

NUCLEAR REACTIONS He4 (p,p), KL=0.58,1,2.1 GeV; calculated σ(KL,θ); wave spreading, internal excitation, and zero-point motion corrections to Glauber theory.

  • Received 15 November 1976

DOI:https://doi.org/10.1103/PhysRevC.15.2146

©1977 American Physical Society

Authors & Affiliations

S. K. Young* and C. W. Wong

  • Department of Physics, University of California, Los Angeles, California 90024

  • *Present address: Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87545.

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Issue

Vol. 15, Iss. 6 — June 1977

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