Heavy Quarkonium Hybrids

Understand

We report on a recent investigation on heavy quarkonium hybrids that goes beyond the usual Born-Oppenheimer approximation by including not only the mixing between nearby hybrid states but also the mixing with quarkonium states.

• We use a systematic effective field theory framework based on NRQCD together with lattice QCD inputs.
• Short and long distance constraints from weak coupling pNRQCD and the QCD effective string theory are also employed.
• We calculate the quarkonium and hybrid spectrum for charmonium and bottomonium, and estimate a number of decay widths.