Eta and eta' mesons and dimension 2 gluon condensate

Kekez, Dalibor and Klabučar, Dubravko (2006) Eta and eta' mesons and dimension 2 gluon condensate. Physical Review D, 73 (3). pp. 36002-12. ISSN 1550-7998

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Abstract

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 and dimension 4 gluon condensate , 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.

Item Type: Article
Keywords: eta mesons
Date: February 2006
Subjects: NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Additional Information: Copyright (2006) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 0119261, 0098011
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 24 May 2014 14:23
Last Modified: 24 May 2014 14:23
URI: http://digre.pmf.unizg.hr/id/eprint/1682

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