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arXiv · 1409.8620

Insights into the quark-gluon vertex from lattice QCD and meson spectroscopy

E. Rojas·B. El-Bennich·J. P. B. C. De Melo·M. Ali Paracha
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Abstract

By comparing successful quark-gluon vertex interaction models with the corresponding interaction extracted from lattice-QCD data on the quark's propagator, we identify common qualitative features which could be important to tune future interaction models beyond the rainbow ladder approximation. Clearly, a quantitative comparison is conceptually not simple, but qualitatively the results suggest that a realistic interaction should be relatively broad with a strong support at about $0.4-0.6$~GeV and infrared-finite.

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E. Rojas, B. El-Bennich, J. P. B. C. De Melo, M. Ali Paracha. 2014-09-30. Insights into the quark-gluon vertex from lattice QCD and meson spectroscopy. https://doi.org/10.1007/s00601-015-1020-x

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