The linear radial spectrum of scalar mesons from QCD sum rules in the planar limit
Saint Petersburg State University, 7/9 Universitetskaya nab., St.Petersburg, 199034, Russia
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Published online: 31 October 2018
We discuss calculations of large-Nc masses of light scalar mesons from the QCD sum rules. Two methods based on the use of linear radial Regge trajectories are presented. We point out the appearance of state near 0.5 GeV in the scalar isoscalar channel which emerges in both methods and presumably corresponds to the lightest scalar particle - the sigma-meson.
© The Authors, published by EDP Sciences, 2018
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