Unitary theory of the deuteron photodisintegration

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physical Review (Section) C: Nuclear Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevC.40.1905· OSTI ID:5119225

Tanabe, H ^[1]; Ohta, K ^[2]

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1. Institut fuer Kernphysik, Johannes Gutenberg-Universitaet, D-6500 Mainz, Federal Republic of Germany (DE)
2. Institute of Physics, University of Tokyo, Komaba, Tokyo 153, Japan (JP)

The deuteron photodisintegration in the {Delta}-resonance region is calculated within a unitary theory of the {ital NN}-{ital N}{Delta}-{pi}{ital NN} system coupled to the photon. The photoexcitation amplitude of the {Delta} is deduced from the {ital M}{sub 1+}(3/2) pion photoproduction amplitude consistently with its background term and the {pi}{ital N} interaction. The {ital NN}-{ital N}{Delta} transition amplitude is obtained from the coupled equations for the {ital NN}-{ital N}{Delta}-{pi}{ital NN} system. The one-pion-exchange currents as well as the normal single-nucleon current are included. The polarization parameters are reproduced quantitatively, but the cross section is slightly underestimated. Comparison of our results with those of the {ital NN}-{ital N}{Delta} coupled-channel model is made. Effects of relativistic corrections and gauge-invariance constraints are discussed.

• OSTI ID: 5119225
• Journal Information: Physical Review (Section) C: Nuclear Physics; (USA), Journal Name: Physical Review (Section) C: Nuclear Physics; (USA) Vol. 40:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BARYONS
BASIC INTERACTIONS
BOSON-EXCHANGE MODELS
BOSONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DELTA BARYONS
DELTA-1232 BARYONS
DEUTERIUM TARGET
DISSOCIATION
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GAUGE INVARIANCE
GENERAL RELATIVITY THEORY
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MATRIX ELEMENTS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
N BARYONS
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
OBE MODEL
OPE MODEL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERIPHERAL MODELS
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PION-NUCLEON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
RELATIVITY THEORY
TARGETS
THREE-BODY PROBLEM
UNITARITY