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Title: {eta} and {eta}{sup '} mesons and dimension 2 gluon condensate <A{sup 2}>

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 <A{sup 2}> and dimension 4 gluon condensate <F{sup 2}>, is extended to the {eta}-{eta}{sup '} 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}{sup '} 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.

Authors:
 [1];  [2]
  1. Rudjer Boskovic Institute, P.O.B. 180, 10002 Zagreb (Croatia)
  2. Department of Physics, Faculty of Science, Zagreb University, Bijenicka c. 32, 10000 Zagreb (Croatia)
Publication Date:
OSTI Identifier:
20776694
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.73.036002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOUND STATE; COUPLING; ETA MESONS; ETA PRIME-958 MESONS; FLAVOR MODEL; GLUON CONDENSATION; GLUONS; PARTICLE DECAY; PARTICLE WIDTHS; PHOTONS; QUANTUM CHROMODYNAMICS; QUARKS; RESONANCE PARTICLES; REST MASS; SCHWINGER SOURCE THEORY; SU-3 GROUPS; SYMMETRY BREAKING

Citation Formats

Kekez, Dalibor, and Klabucar, Dubravko. {eta} and {eta}{sup '} mesons and dimension 2 gluon condensate <A{sup 2}>. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.036002.
Kekez, Dalibor, & Klabucar, Dubravko. {eta} and {eta}{sup '} mesons and dimension 2 gluon condensate <A{sup 2}>. United States. doi:10.1103/PhysRevD.73.036002.
Kekez, Dalibor, and Klabucar, Dubravko. Wed . "{eta} and {eta}{sup '} mesons and dimension 2 gluon condensate <A{sup 2}>". United States. doi:10.1103/PhysRevD.73.036002.
@article{osti_20776694,
title = {{eta} and {eta}{sup '} mesons and dimension 2 gluon condensate <A{sup 2}>},
author = {Kekez, Dalibor and Klabucar, Dubravko},
abstractNote = {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 <A{sup 2}> and dimension 4 gluon condensate <F{sup 2}>, is extended to the {eta}-{eta}{sup '} 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}{sup '} 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.},
doi = {10.1103/PhysRevD.73.036002},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 73,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2006},
month = {Wed Feb 01 00:00:00 EST 2006}
}