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Titolo:
QUARK-ANTIQUARK RESONANCES IN THE NJL MODEL
Autore:
BERNARD V; BLIN AH; HILLER B; IVANOV YP; OSIPOV AA; MEISSNER UG;
Indirizzi:
UNIV STRASBOURG 1,PHYS THEOR LAB,BP 28 F-67037 STRASBOURG 2 FRANCE UNIV COIMBRA,DEPT FIS,CTR FIS TEOR P-3000 COIMBRA PORTUGAL JOINT INST NUCL RES,NUCL PROBLEMS LAB DUBNA 141980 MOSCOW REGION RUSSIA KFA JULICH GMBH,FORSCHUNGSZENTRUM,INST KERNPHYS THEORIE D-52425 JULICH GERMANY
Titolo Testata:
Physics letters. Section B
fascicolo: 1-4, volume: 409, anno: 1997,
pagine: 483 - 490
SICI:
0370-2693(1997)409:1-4<483:QRITNM>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
JONA-LASINIO MODEL; AXIAL-VECTOR MESONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
V. Bernard et al., "QUARK-ANTIQUARK RESONANCES IN THE NJL MODEL", Physics letters. Section B, 409(1-4), 1997, pp. 483-490

Abstract

The problem of the rho meson resonance solution in the extended NJL model is studied. It has been shown previously that the solution for the rho meson changes smoothly from a bound state to a ''virtual state''when the vector channel attraction becomes too weak to support bound state solutions. We have found that together with these solutions a separate resonance branch appears which is not connected smoothly with the bound state solutions. At small values of constituent quark mass, msimilar to 200 MeV, it corresponds to the physical vector meson resonance solution in the quark-continuum region. The a(1) and sigma resonances are also discussed. (C) 1997 Elsevier Science B.V.

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Documento generato il 20/09/20 alle ore 09:13:25