Higher-order field effects in pion absorption on two nucleons

Journal Article · Thu Sep 01 00:00:00 EDT 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.28.1318· OSTI ID:5465776

Kalbermann, G; Eisenberg, J M

We estimate the importance of rescattering diagrams involving intrinsically third-order effects in the pionic field for the process of pion absorption at rest on a pair of nucleons. The calculation is performed using a chiral bag model adapted for the correct description of higher-order pionic effects. The model provides the form factors needed in order to achieve a convergent result. The third-order diagrams cancel in part; nevertheless, the net result is as important as the conventional second-order s-wave rescattering mechanism for reasonable bag radii Rapprox.1 fm and becomes dominant for bag radii R< or approx. =0.7 fm for internucleon distances less than about 2 fm.

• Research Organization: Department of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel
• OSTI ID: 5465776
• Journal Information: Phys. Rev. C; (United States), Vol. 28:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PION REACTIONS
CAPTURE
PION-NUCLEON INTERACTIONS
BAG MODEL
CHIRALITY
COUPLING CONSTANTS
FIELD THEORIES
FORM FACTORS
LAGRANGIAN FUNCTION
NUCLEONS
RESCATTERING
BARYONS
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
QUARK MODEL
SCATTERING
653003* - Nuclear Theory- Nuclear Reactions &amp; Scattering
645206 - High Energy Physics- Particle Interactions &amp; Properties-Theoretical- Strong Interactions
Baryon No. = 1- (-1987)