Delta. sub 33 -isobar contribution to the soft nucleon-nucleon potentials. II. pi. rho. -exchange potentials

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.46.102· OSTI ID:7277465

Rijken, T A; Stoks, V G.J. ^[1]

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1. Institute for Theoretical Physics, University of Nijmegen, Nijmegen (Netherlands)

Pion-rho-exchange nucleon-nucleon potentials are derived for one or two {Delta} isobars in the intermediate states. As in the companion work on two-pion exchange, strong dynamical pair suppression is assumed. At the {ital NN}{pi}, {rho} and {ital N}{Delta}{pi}, {rho} vertices Gaussian form factors are incorporated into the relativistic two-body framework by using a dispersion representation for the {pi}- and {rho}-exchange amplitudes. The Fourier transformations are performed using factorization techniques for the energy denominators, taking into account the mass difference between the nucleon and the {Delta} isobar. The potentials are calculated in the adiabatic approximation of all planar and crossed three-dimensional momentum-space {pi}{rho} diagrams. We also give the contributions of the {pi}{rho} iteration, which can be subtracted or not, depending on whether one performs a coupled-channel calculation for, e.g., the {ital NN}, {ital N}{Delta} system, or a single {ital NN}-channel calculation.

• OSTI ID: 7277465
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 46:1; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSON-EXCHANGE MODELS
BOSONS
COUPLED CHANNEL THEORY
ELEMENTARY PARTICLES
EQUATIONS
HADRONS
INTEGRAL EQUATIONS
LIPPMANN-SCHWINGER EQUATION
MATHEMATICAL MODELS
MESONS
NUCLEON-NUCLEON POTENTIAL
OBE MODEL
OPE MODEL
PARTICLE MODELS
PERIPHERAL MODELS
PIONS
POTENTIALS
PSEUDOSCALAR MESONS
RARITA-SCHWINGER THEORY