Sea-quark effects in pion-nucleon scattering

The pion-nucleon interaction is investigated in a quark potential model with explicit admixtures of quark-antiquark pairs in the baryon wave functions. Two different approximations of the one-gluon-exchange interaction are studied. One of them reproduces all low-energy data reasonably well.

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Bibliographische Detailangaben
Veröffentlicht in:	Physical review letters 1990-12, Vol.65 (26), p.3245-3248
Hauptverfasser:	MÜLLER, R, HOFMANN, H. M
Format:	Artikel
Sprache:	eng
Schlagworte:	645204 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties Atomic and molecular physics BARYON-BARYON INTERACTIONS BARYONS Classical and quantum physics: mechanics and fields COMPOSITE MODELS Electronic structure of atoms, molecules and their ions: theory ELEMENTARY PARTICLES Exact sciences and technology FERMIONS FUNCTIONS General theory of scattering HADRON-HADRON INTERACTIONS HADRONS INTERACTIONS MATHEMATICAL MODELS MESON-BARYON INTERACTIONS MESON-NUCLEON INTERACTIONS NUCLEON-NUCLEON INTERACTIONS NUCLEONS Other topics in the theory of the electronic structure of atoms, molecules and their ions PARTICLE INTERACTIONS PARTICLE MODELS PHASE SHIFT Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PION-NUCLEON INTERACTIONS POTENTIALS QUARK MODEL WAVE FUNCTIONS
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Beschreibung
Zusammenfassung:	The pion-nucleon interaction is investigated in a quark potential model with explicit admixtures of quark-antiquark pairs in the baryon wave functions. Two different approximations of the one-gluon-exchange interaction are studied. One of them reproduces all low-energy data reasonably well.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.65.3245