The Isobar-Doorway Theory for Pion-Nucleus Interactions - INSPIRE

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The Isobar-Doorway Theory for Pion-Nucleus Interactions

L.S. Kisslinger
(
- Carnegie Mellon U.
)
,
W.L. Wang
(
- Argonne
)

Dec, 1975

60 pages

Published in:

Annals Phys. 99 (1976) 374

DOI:

10.1016/0003-4916(76)90100-7

Report number:

Print-76-0002 (CARNEGIE-MELLON)

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Abstract: (Elsevier)

Pion-nucleus scattering and reactions are treated in a theory which explicitly introduces the pion-nucleon resonances. Using a separation in Hilbert Space, doorway states of isobar-nuclear systems are introduced and nonresonant processes are clearly separated from resonance interactions. With one choice of doorway states a multiple scattering series is derived which corresponds to the conventional theory with binding energy and other corrections included. When another choice the isobar-doorway model is derived, with parameterization explicitly related to specific dynamic effects, our framework provides a phenomenological model for treating meson-nucleus interactions to all orders. Moreover, the parameters of the model have clear theoretical significance which can extend our knowledge of strong interactions physics. A numerical study is given for elastic scattering.

PI- NUCLEUS: INTERACTION
INTERACTION: PI- NUCLEUS
MODEL: INTERACTION
INTERACTION: MODEL
MULTIPLE SCATTERING
S-MATRIX
APPROXIMATION: IMPULSE
CORRECTION: BINDING ENERGY
NUCLEAR PHYSICS: CORRECTION
MODEL: OFF-SHELL

References(26)

Figures(0)

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