dorsal/arxiv
View SchemaQUARK MODEL DESCRIPTION OF THE N-N SYSTEM: MOMENTUM DISTRIBUTIONS, STRUCTURE FUNCTIONS AND THE EMC EFFECT
| Authors | W. Koepf, L. Wilets |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9502044 |
| URL | https://arxiv.org/abs/nucl-th/9502044 |
| DOI | 10.1103/PhysRevC.51.3445 |
| Journal | Phys.Rev.C51:3445-3453,1995 |
Abstract
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.
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"abstract": "We employ a relativistic quark bag picture, the chromo-dielectric soliton\nmodel, to discuss the quarks\u0027 symmetry structure and momentum distribution in\nthe $N$-$N$ system. Six-quark clusters are constructed in a constrained\nmean-field calculation. The corresponding Hamiltonian contains not only an\neffective interaction between the quarks and a scalar field, which is assumed\nto parameterize all non-perturbative effects due to the non-linearity of QCD,\nbut also quark-quark interactions mediated through one-gluon-exchange. We also\nevaluate the quark light-cone distribution functions, characterizing inclusive\ndeep-inelastic lepton scattering, for the nucleon as well as for the six-quark\nstructures. We find a competition between a softening of the quarks\u0027 momenta\nthrough the increase of the confinement volume, and a hardening via the\nadmixture of higher symmetry configurations due to the color-electrostatic\none-gluon-exchange. These findings suggest an unexpected absence of\nmany-nucleon, multi-quark effects, even though six-quark structures should\nrepresent a non-negligible part of the nuclear ground state.",
"arxiv_id": "nucl-th/9502044",
"authors": [
"W. Koepf",
"L. Wilets"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.51.3445",
"journal_ref": "Phys.Rev.C51:3445-3453,1995",
"title": "QUARK MODEL DESCRIPTION OF THE N-N SYSTEM: MOMENTUM DISTRIBUTIONS, STRUCTURE FUNCTIONS AND THE EMC EFFECT",
"url": "https://arxiv.org/abs/nucl-th/9502044"
},
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