Glueball masses and Pomeron trajectory in nonperturbative QCD

TL;DR

This paper calculates glueball masses and Regge trajectories using a nonperturbative Wilson loop method, aligning well with lattice results and exploring their connection to the Pomeron and trajectory mixing.

Contribution

It introduces a parameter-free nonperturbative approach based on Wilson loops to predict glueball spectra and Regge trajectories, linking them to the Pomeron.

Findings

Glueball mass predictions match lattice results

The leading glueball trajectory relates to the Pomeron

Mixing between glueball and qar q trajectories is significant

Abstract

Using a nonperturbative method based on asymptotic behaviour of Wilson loops we calculate masses of glueballs and corresponding Regge-trajectories. The method contains no fitting parameters and the mass scale is fixed by the meson Regge slope. Theoretical predictions for lowest glueball states are in a perfect agreement with lattice results. The leading glueball trajectory and its relation to the Pomeron is discussed in details. Important role of mixing between glueball and q\bar q trajectories is emphasized.