NN potential within the nonrelativistic quark model

doi:10.1016/0375-9474(81)90337-7

Nuclear Physics A

Volume 358, 13 April 1981, Pages 357-358

https://doi.org/10.1016/0375-9474(81)90337-7 Get rights and content

Abstract

The short range behavior of the nucleon-nucleon (NN) potential is studied in terms of the nonrelativistic quark model. The spin dependent part of the quark-quark interaction with a proper antisymmetrization provides a rather soft repulsive core.

References (5)

A. De Rujula et al.
Phys. Rev.
(1975)
N. Isgur et al.
Phys. Rev.
(1978)

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Cited by (7)

Bethe-salpeter approach with the separable interaction for the deuteron
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Recent developments of the covariant Bethe—Salpeter (BS) approach with the use of the separable interaction for the deuteron are reviewed. It is shown that the BS formalism allows a covariant description of various electromagnetic reactions like the lepton-deuteron scattering, deuteron electro-disintegration, deep inelastic scattering (DIS) of leptons on light nuclei. The procedure of the construction of the separable nucleon-nucleon (N N) interaction is discussed. The BS formalism facilitates analysis of the role of the P-waves (negative energy components) in the electromagnetic properties of the deuteron and its comparison with the nonrelativistic results. Furthermore the covariant BS approach makes it possible to analyze DIS of leptons from the deuteron in a model independent way and to extend the formalism to DIS reactions on the light nuclei.
Equivalent local potentials of the short-range part of the NN interactions within the quark model
1987, Nuclear Physics, Section A
The NN interaction in a quark model with quark-antiquark excitations
1985, Nuclear Physics, Section A
Quark-antiquark excitations inherent in the quark-gluon interaction have been incorporated into a quark model of the nucleon to study the effects of such excitations on the NN interaction within the framework of the resonating group method. The three-quark (3q) components of a single nucleon are augmented by ( $3 q)(q q$ ) excitations with the 24 possible spin, isospin, color combinations for the energetically lowest p-wave relative motion function. Quark exchange kernels are then calculated for the two-nucleon system described by these improved nucleon internal functions; and these exchange kernels are converted to phase-shift-equivalent effective NN potentials by the Wigner-transform WKB technique. The off-shell qq̄ pair-creation terms are derived from the one-gluon exchange diagrams in the Breit approximation in analogy with the derivation of the qq and qq̄ potentials. The parameters of the interaction are chosen to be consistent with the experimental Δ-N mass difference, the nucleon-vector-meson coupling constants, and the nucleon magnetic moments. Within these constraints, the predicted amplitudes of the ( $3 q)(q q$ ) components of the nucleon internal functions have been shown to be insensitive to the precise values of the model parameters. In particular, they pass the crucial test of being insensitive to very large changes in the magnitude of the confinement potential constant which is a necessary ingredient of the model. The qq̄ excitations lead to the following effects in the S-wave NN potentials: (i) The repulsive core heights of the simple 3q-3q model are greatly reduced but retain their strong essentially linear energy dependence, with numerical values very similar to those of the short-range phenomenological terms of the Paris potential. (ii) The effective potentials have acquired an attractive part in the 0.8-1.5 fm range. However, this attraction is too weak to bind the deuteron or fit the extreme low-energy S-wave phase shifts.
One and two baryon systems in the chiral constituent quark model
1998, Progress of Theoretical Physics
Short-range part of the NN interaction: Effects of changes in six-quark spatial symmetry
1983, Physical Review C
Short range part of the NN interaction: Equivalent local potentials from quark exchange kernels
1983, Physical Review C

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^☆: Work supported by DFG under contract WE 655/5–6.

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NN potential within the nonrelativistic quark model☆

Abstract

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