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High Energy Physics - Phenomenology

arXiv:hep-ph/0503105 (hep-ph)
[Submitted on 11 Mar 2005]

Title:A Bethe-Salpeter study with the <A^2>-enhanced effective QCD coupling

Authors:Dalibor Kekez, Dubravko Klabucar
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Abstract: Dyson-Schwinger equations provide a prominent approach to physics of strong interactions. To reproduce the hadronic phenomenology well, the Dyson-Schwinger approach in the rainbow-ladder approximation must employ an effective interaction between quarks which is fairly strong at intermediate (Q^2 approx. 0.5 GeV^2) spacelike transferred momenta. We have recently proposed that such an interaction may originate from the dimension 2 gluon condensate <A^2> which has recently attracted much attention, and showed that the resulting effective running coupling leads to the sufficiently strong dynamical chiral symmetry breaking and successful phenomenology at least in the light sector of pseudoscalar mesons. In the present paper, we give a more detailed investigation of the parameter dependence of these results.
Comments: 20 pages, 5 figures, Prepared for 2nd Conference on Nuclear and Particle Physics with CEBAF at Jlab (NAPP 2003), Dubrovnik, Croatia, 26-31 May 2003
Subjects: High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Cite as: arXiv:hep-ph/0503105
  (or arXiv:hep-ph/0503105v1 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0503105
Journal reference: Fizika B13 (2004) 461-476

Submission history

From: Dubravko Klabučar [view email]
[v1] Fri, 11 Mar 2005 14:42:50 UTC (43 KB)
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