Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
ELECTROPRODUCTION OF A PHI-MESON FROM THE PROTON AND THE STRANGENESS IN THE NUCLEON
Autore:
TITOV AI; YANG SN; OH Y;
Indirizzi:
NATL TAIWAN UNIV,DEPT PHYS TAIPEI 10617 TAIWAN JOINT INST NUCL RES,BOGOLIUBOV THEORET LAB DUBNA 141980 RUSSIA
Titolo Testata:
Nuclear physics. A
fascicolo: 3, volume: 618, anno: 1997,
pagine: 259 - 290
SICI:
0375-9474(1997)618:3<259:EOAPFT>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
HARMONIC-OSCILLATOR MODEL; RELATIVISTIC QUARK-MODEL; CLOUDY BAG MODEL; MATRIX-ELEMENTS; FORM-FACTORS; ELASTIC-SCATTERING; SPIN STRUCTURE; SIGMA-TERM; CHIRAL BAG; DEUTERON;
Keywords:
QUARK MODEL; PHI ELECTROPRODUCTION; STRANGENESS CONTENT OF NUCLEON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
62
Recensione:
Indirizzi per estratti:
Citazione:
A.I. Titov et al., "ELECTROPRODUCTION OF A PHI-MESON FROM THE PROTON AND THE STRANGENESS IN THE NUCLEON", Nuclear physics. A, 618(3), 1997, pp. 259-290

Abstract

We analyze the process e p --> e p phi near the threshold within the uud-s (s) over bar cluster model as a probe of the strangeness contentof the proton. Our consideration is based on the relativistic harmonic oscillator quark model which takes into account the Lorentz-contraction effect of the hadron wavefunctions. We find that the knockout mechanisms are comparable to the diffractive production of the vector-meson-dominance model when only a 3-5% strange quark admixture is assumed,which should be compared with 10-20% of the non-relativistic quark model prediction. The cross sections of the uud- and s (s) over bar knockout processes have qualitatively different dependences on the 4-momentum transfer squared to the proton and may be distinguished experimentally. We also discuss briefly a way to determine the strangeness content of the proton in the 5-quark cluster model. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 08:17:43