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arXiv · 1811.01748

The linear radial spectrum of scalar mesons within the QCD sum rules in the planar limit

S. S. Afonin·T. D. Solomko
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Abstract

We discuss the radial spectrum of light scalar mesons in the framework of spectral sum rules in the large-Nc (planar) limit of QCD. Two methods based on the use of linear radial Regge trajectories are presented. A special emphasis is placed on the appearance of scalar isoscalar state near 0.5 GeV. Within the considered sum rules, the existence of this meson (which could be a large-Nc counterpart to the sigma-meson) is closely related with existence of resonances in the vector channels and on the radial scalar trajectory.

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S. S. Afonin, T. D. Solomko. 2018-11-02. The linear radial spectrum of scalar mesons within the QCD sum rules in the planar limit. https://doi.org/10.1051/epjconf/201819104004

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