Speaker
Description
The study of hadronic scattering processes remains fundamental for understanding the dynamics of strong interactions across energy scales. Finite-Energy Sum Rules (FESR) provide a powerful framework for connecting low-energy resonance behavior with the high-energy regime described by Regge theory, offering valuable constraints on phenomenological amplitudes. Motivated by the COMPASS measurements of ($\eta\pi$) production, the reaction ($\pi p \to \pi \eta p$) is examined within this framework. This channel is particularly well suited for probing the transition between resonance-dominated and Regge-dominated dynamics, and for exploring possible contributions from exotic mesons. The analysis sheds light on the consistency of amplitude descriptions across energies and enhances our understanding of the mechanisms governing ($\eta\pi$) production.
