Meson-Nucleon Scattering Amplitudes from Lattice QCD

Understand

Lattice QCD calculations of resonant meson-meson scattering amplitudes have improved significantly due to algorithmic and computational advances.

• However, progress in meson-nucleon scattering has been slower due to difficulties in computing the necessary correlation functions, the exponential signal-to-noise problem, and the finite-volume treatment of scattering with fermions.
• Nonetheless, first benchmark calculations have now been performed.
• The status of lattice QCD calculations of meson-nucleon scattering amplitudes is reviewed together with comments on future prospects.