High-energy pion-nucleus elastic scattering

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.841· OSTI ID:6276141

Chen, C M ^[1]; Ernst, D J ^[2]; Johnson, M B ^[3]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States) Department of Physics and Center for Theoretical Physics, Texas A M University, College Station, Texas 77843 (United States)
2. Department of Physics and Center for Theoretical Physics, Texas A M University, College Station, Texas 77843 (United States) Department of Physics Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States)
3. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We investigate theoretical approaches to pion-nucleus elastic scattering at high energies (300[le][ital T][sub [pi]][le]1 GeV). A model-exact'' calculation of the lowest-order microscopic optical model, carried out in momentum space and including the full Fermi averaging integration, a realistic off-shell pion-nucleon scattering amplitude and fully covariant kinematics, is used to calibrate a much simpler theory. The simpler theory utilizes a local optical potential with an eikonal propagator and includes the Coulomb interaction and the first Wallace correction, both of which are found to be important. Comparisons of differential cross sections out to beyond the second minimum are made for light and heavy nuclei. Particularly for nuclei as heavy as [sup 40]Ca, the eikonal theory is found to be an excellent approximation to the full theory.

• OSTI ID: 6276141
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663300* -- Nuclear Reactions & Scattering
General-- (1992-)
663460 -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
663540 -- Nuclear Mass Ranges-- A=39-58-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
EIKONAL APPROXIMATION
ELASTIC SCATTERING
ENERGY RANGE
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
OPTICAL MODELS
PARTICLE INTERACTIONS
PION REACTIONS
PION-NUCLEON INTERACTIONS
RELATIVISTIC RANGE
SCATTERING
TARGETS