Medium modification of meson propagation between two nucleons in finite nuclei

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

DOI:https://doi.org/10.1103/PhysRevC.48.1988· OSTI ID:6139188

Sarafian, H ^[1]; Johnson, M B; Siciliano, E R ^[2]

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1. Department of Physics, Pennsylvania State University, York, Pennsylvania 17403 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We derive simple expressions for the effect of medium modifications (or distortions) on the propagation of a pion between two nucleons in a nucleus. Our results are applicable to pion reactions in a variety of situations, but we are particularly interested in the influence of distortions on pion double charge exchange at low energy. We are able to calculate these distortions for a finite nucleus using a realistic choice of optical potential. We represent their effect as a modification of the [ital S]- and [ital P]-wave pion-nucleon scattering amplitudes that occur at the location of the first (or last) nucleon to be struck. We illustrate our method by showing numerical results for a shematic optical potential.

• OSTI ID: 6139188
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 48:4; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
PIONS
PROPAGATOR
CHARGE-EXCHANGE REACTIONS
MEV RANGE 10-100
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
OPTICAL MODELS
PARTIAL WAVES
PION REACTIONS
PION-NUCLEON INTERACTIONS
SCATTERING AMPLITUDES
AMPLITUDES
BARYON-BARYON INTERACTIONS
BOSONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MEV RANGE
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PSEUDOSCALAR MESONS
663460* - Meson- & Hyperon-induced Reactions & Scattering- (1992-)