The decay of the b₁(1235)-neutral meson through the ωπ⁰ channel at GlueX

A long-standing goal of hadron physics has been to understand how the quark and gluon degrees of freedom that are present in the fundamental QCD Lagrangian manifest themselves in the spectrum of hadrons.

The GlueX experiment at Jefferson Lab contributes to the global spectroscopy program through studies of the mesons produced using a beam of 8-9 GeV linearly polarized photons. This experiment focuses on the exploration of the light-quark domain, potentially accessing hybrid mesons with exotic J^PC quantum numbers in photoproduction reactions.

Recent Lattice QCD calculations predict that the lightest exotic π₁(1600) decays primarily to the b₁π system and can be experimentally accessed through the dominant decay b₁→ωπ. In this talk, we discuss the direct production of the b₁ meson γp→b₁p, where the axial-vector meson b₁(1235) decays to ωπ⁰. We extract the D/S wave ratio from a partial-wave analysis to validate the predicted couplings to this axial-vector resonance from Lattice QCD calculations. The model for the ωπ⁰ system along with preliminary partial-wave analysis fit results will be presented.