Heavy quark potential from QCD-related effective coupling
High Energy Physics - Phenomenology
2016-11-15 v3 Nuclear Theory
Abstract
We implement our past investigations in the quark-antiquark interaction through a non-perturbative running coupling defined in terms of a gluon mass function, similar to that used in some Schwinger-Dyson approaches. This coupling leads to a quark-antiquark potential, which satisfies not only asymptotic freedom but also describes linear confinement correctly. From this potential, we calculate the bottomonium and charmonium spectra below the first open flavor meson-meson thresholds and show that for a small range of values of the free parameter determining the gluon mass function an excellent agreement with data is attained.
Keywords
Cite
@article{arxiv.1509.01382,
title = {Heavy quark potential from QCD-related effective coupling},
author = {Cesar Ayala and Pedro Gonzalez and Vicente Vento},
journal= {arXiv preprint arXiv:1509.01382},
year = {2016}
}
Comments
13 pages, 4 figures; v3: version accepted for publication in Journal of Physics G