Calculation of the nucleon-nucleon interaction due to vector-meson exchange
- Department of Physics and Center for Nuclear Theory, Brooklyn College of the City University of New York, Brooklyn, New York 11210 (United States)
We make use of a momentum-space bosonization of a generalized Nambu{endash}Jona-Lasinio model to calculate the contribution of rho and omega exchange to the one-boson-exchange (OBE) model of the nucleon-nucleon interaction. Momentum-dependent meson-quark coupling constants are obtained in the bosonization scheme. A vector-meson-dominance (VMD) model is used to obtain information concerning the momentum dependence of the meson-nucleon vertex, other than that which arises from the momentum dependence of the meson-quark coupling constants. We find good agreement with the magnitude of the force at {ital q}{sup 2}=0 for both rho and omega exchange. The momentum dependence of the interaction in the region {minus}0.2 GeV{sup 2}{le}{ital q}{sup 2}{le}0 was calculated. We only obtain about two-thirds of the strength of the OBE interaction at {ital q}{sup 2}={minus}0.2 GeV{sup 2}, suggesting the importance of interactions of shorter range than that considered here. (We note that, for {minus}0.2 GeV{sup 2}{le}{ital q}{sup 2}{le}0, we span the range of {ital q}{sup 2} of significance for nuclear structure studies.) {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 286793
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 54; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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