Pregled bibliografske jedinice broj: 256932
η and η′ mesons and dimension 2 gluon condensate 〈A2〉
η and η′ mesons and dimension 2 gluon condensate 〈A2〉 // Physical review. D, Particles, fields, gravitation, and cosmology, 73 (2006), 3; 036002, 12 doi:10.1103/PhysRevD.73.036002 (međunarodna recenzija, članak, znanstveni)
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Naslov
η and η′ mesons and dimension 2 gluon condensate 〈A2〉
Autori
Kekez, Dalibor ; Klabučar, Dubravko
Izvornik
Physical review. D, Particles, fields, gravitation, and cosmology (1550-7998) 73
(2006), 3;
036002, 12
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Dyson-Schwinger equations ; operator-product expansion ; QCD greens-functions ; bound-state approach ; pseudoscalar mesons ; infrared behavior
Sažetak
The study of light pseudoscalar quark-antiquark bound states in the Dyson-Schwinger approach with the effective QCD coupling enhanced by the interplay of the dimension 2 gluon condensate <A2> and dimension 4 gluon condensate <F2>, is extended to the eta– eta[prime] complex. We include the effects of the gluon axial anomaly into the Dyson-Schwinger approach to mesons. The calculated masses, mixing and two-photon decay widths of eta and eta[prime] mesons are in agreement with experiment. Also, in a model-independent way, we give the modification of the Gell-Mann– Okubo and Schwinger nonet relations due to the interplay of the gluon anomaly and SU(3) flavor symmetry breaking.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Ustanove:
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
