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Titolo:
RHO-MESON PROPERTIES IN THE NAMBU-JONA-LASINIO MODEL
Autore:
POLLERI A; BROGLIA RA; PIZZOCHERO PM; SCOCCOLA NN;
Indirizzi:
NIELS BOHR INST,BLEGDAMSVEJ 17 DK-2100 COPENHAGEN O DENMARK UNIV MILAN,DIPARTIMENTO FIS I-20133 MILAN ITALY IST NAZL FIS NUCL I-20133 MILAN ITALY UNIV COPENHAGEN,NIELS BOHR INST DK-2100 COPENHAGEN O DENMARK COMIS NACL ENERGIA ATOM,DEPT FIS RA-1429 BUENOS AIRES DF ARGENTINA
Titolo Testata:
ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI
fascicolo: 3, volume: 357, anno: 1997,
pagine: 325 - 331
SICI:
0939-7922(1997)357:3<325:RPITNM>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEAR-FIELD-THEORY; AXIAL-VECTOR MESONS; FOUNDATION; EXPANSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
A. Polleri et al., "RHO-MESON PROPERTIES IN THE NAMBU-JONA-LASINIO MODEL", ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 357(3), 1997, pp. 325-331

Abstract

Some properties of the rho vector meson are calculated within the Nambu-Jona-Lasinio model, including processes that go beyond the random phase approximation. To classify the higher order contributions, we adopt 1/N-c as expansion parameter. In particular, we evaluate the leading order contributions to the rho --> pi pi decay width, obtaining the value Gamma = 118 MeV, and to the shift of the rho mass which turns out to be lowered by 64 MeV with respect to its RPA value. A set of model parameters is determined accordingly.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 10:40:45