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Titolo:
VECTOR-MESON DOMINANCE AND P-OMEGA MIXING
Autore:
COON SA; SCADRON MD;
Indirizzi:
NEW MEXICO STATE UNIV,DEPT PHYS LAS CRUCES NM 88003 UNIV ARIZONA,DEPT PHYS TUCSON AZ 85721
Titolo Testata:
Physical review. C. Nuclear physics
fascicolo: 5, volume: 58, anno: 1998,
pagine: 2958 - 2962
SICI:
0556-2813(1998)58:5<2958:VDAPM>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
PION FORM-FACTOR; CHARGE-SYMMETRY; QCD; VIOLATION; BREAKING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
44
Recensione:
Indirizzi per estratti:
Citazione:
S.A. Coon e M.D. Scadron, "VECTOR-MESON DOMINANCE AND P-OMEGA MIXING", Physical review. C. Nuclear physics, 58(5), 1998, pp. 2958-2962

Abstract

The scale of a phenomenologically successful charge-symmetry-violating nucleon-nucleon interaction, that attributed to meson exchange with a Delta I=1 p-omega transition, is set by the Coleman-Glashow SU(2)-breaking tadpole mechanism. A single tadpole scale has been obtained from symmetry arguments, electromagnetic meson and baryon measured mass splittings, and the observed isospin-violating (Delta I=1) decay omega-->pi(+)pi(-). The hadronic realization of this tadpole mechanism lies in the I=1 a(0) scalar meson. We show that measured hadronic and two-photon widths of the ao meson, with the aid of the vector meson dominance model, recover the universal Coleman-Glashow tadpole scale. [S0556-2813(98)00911-X].

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Documento generato il 25/09/20 alle ore 00:39:11