Speaker
Description
This presentation outlines ongoing research using lattice QCD to compute the γπ → πω scattering amplitude with J^P = 1^+ quantum numbers, enabling the determination of the b1 → γπ coupling as a function of photon virtuality. This process probes the internal structure of the b1(1235) meson, a hadronic resonance whose internal dynamics are of significant interest. The transition is experimentally accessible at Jefferson Lab through photoproduction reactions, and theoretical input from Lattice QCD is useful for constraining partial wave analyses and providing insight into the structure of the b1 resonance. Building on prior work by the Hadron Spectrum Collaboration, the study employs advanced techniques, including distillation operators and optimized interpolating operators, to compute three-point correlation functions. These correlators will be analyzed by applying and extending the existing finite-volume formalism to extract the transition form factors for this process, specifically an electric dipole and a longitudinal component. The results aim to provide theoretical input for experimental analyses at Jefferson Lab’s GlueX program.
