Study of the N N interaction in a Goldstone boson exchange model

Bartz, D.; Stancu, F.

doi:10.1103/PhysRevC.60.055207

Study of the N N interaction in a Goldstone boson exchange model

D. Bartz
(
- Liege U.
)
,
F. Stancu
(
- Liege U.
)

Mar, 1999

28 pages

Published in:

Phys.Rev.C 60 (1999) 055207

e-Print:

hep-ph/9903533 [hep-ph]

DOI:

10.1103/PhysRevC.60.055207

Report number:

ULG-PNT-99-3-BS

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Abstract:

Adiabatic nucleon-nucleon potentials are calculated in a six-quark nonrelativistic chiral constituent quark model where the Hamiltonian contains a linear confinement and a pseudoscalar meson (Goldstone boson) exchange interaction between quarks. Calculations are performed both in a cluster model and a molecular orbital basis, through coupled channels. In both cases the potentials present an important hard core at short distances, explained through the dominance of the [51]_{FS} configuration, but do not exhibit an attractive pocket. We add a scalar meson exchange interaction and show how it can account for some middle-range attraction.

nucleon nucleon: interaction
potential: adiabatic
quark: nonrelativistic
symmetry: chiral
quark: multiquark
effective Hamiltonian
potential: confinement
Goldstone particle: exchange
model: cluster
quark: molecule

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