Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-02-26
Phys.Rev.C51:3445-3453,1995
Physics
Nuclear Physics
Nuclear Theory
26 pages (REVTEX), 7 figures (uuencoded Postscript) optionally included using epsfig.sty
Scientific paper
10.1103/PhysRevC.51.3445
We employ a relativistic quark bag picture, the chromo-dielectric soliton model, to discuss the quarks' symmetry structure and momentum distribution in the $N$-$N$ system. Six-quark clusters are constructed in a constrained mean-field calculation. The corresponding Hamiltonian contains not only an effective interaction between the quarks and a scalar field, which is assumed to parameterize all non-perturbative effects due to the non-linearity of QCD, but also quark-quark interactions mediated through one-gluon-exchange. We also evaluate the quark light-cone distribution functions, characterizing inclusive deep-inelastic lepton scattering, for the nucleon as well as for the six-quark structures. We find a competition between a softening of the quarks' momenta through the increase of the confinement volume, and a hardening via the admixture of higher symmetry configurations due to the color-electrostatic one-gluon-exchange. These findings suggest an unexpected absence of many-nucleon, multi-quark effects, even though six-quark structures should represent a non-negligible part of the nuclear ground state.
Koepf Wolfram
Wilets L.
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