Spectra of heavy quarkonia in a Bethe-Salpeter-equation approach

Understand

In a covariant Bethe-Salpeter-equation approach and with a rainbow-ladder truncated model of QCD, we investigate the use of an effective interaction with the goal of reproducing QCD phenomenology.

• We extend previous studies and present results for ground and excited meson states in the bottomonium and charmonium systems, where the results are surprisingly good for most states.
• In addition, we formulate a critical outlook on states with exotic quantum numbers as well as the light-quark domain.