Hadron dynamics in high-energy pion-nucleus scattering

Conference · Wed Dec 30 23:00:00 EST 1992

OSTI ID:10128867

Johnson, M B

It is argued that pion-nucleus scattering at high energy (above 300 MeV) is likely to be easier to interpret than it has been at lower energies where the {Delta}{sub 33} resonance dominates. We establish this by examining the relative importance of various dynamic ingredients of scattering theory for high-energy pions and comparing different versions of the theory: a ``model-exact`` microscopic optical model and an eikonal approximation. For nuclei as heavy as Ca, the eikonal theory is an excellent approximation to the full theory for the angular distribution out to the position of the second minimum in the cross section. The prospects for using high-energy pions to examine modifications of nucleons and baryon resonances in nuclei, nuclear structure, exchange currents, short-range correlations, and to characterize pion propagation are discussed.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 10128867
• Report Number(s): LA-UR--93-388; CONF-921001--1; ON: DE93007329
• Country of Publication: United States
• Language: English

Related Subjects

662340
663460
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGE-EXCHANGE REACTIONS
CROSS SECTIONS
DELTA BARYONS
HADRON INTERACTIONS
MESON- AND HYPERON-INDUCED REACTIONS AND SCATTERING
NUCLEAR STRUCTURE
NUCLEI
OPTICAL MODELS
PION REACTIONS
PION-NUCLEON INTERACTIONS
SCATTERING
SCATTERING AMPLITUDES