A Review on Partial-wave Dynamics with Chiral Effective Field Theory and Dispersion Relation

TL;DR

This review discusses recent advances in understanding low-energy strong interactions and resonances using partial wave analysis combined with chiral effective field theories and dispersion relations, highlighting applications to various meson-baryon scatterings.

Contribution

It summarizes recent progress in applying partial wave dynamics with chiral effective theories and dispersion relations to analyze low-energy hadron interactions and resonances.

Findings

Enhanced understanding of non-perturbative QCD regimes.

Improved analysis of meson-meson and meson-baryon scatterings.

Insights into properties of exotic and ordinary hadrons.

Abstract

The description of strong interaction physics of low-lying resonances is out of the valid range of perturbative QCD. Chiral effective field theories have been developed to tackle the issue. Partial wave dynamics is the systematic tool to decode the underlying physics and reveal the properties of those resonances. It is extremely powerful and helpful for our understanding of the non-perturbative regime, especially when dispersion techniques are utilized simultaneously. Recently, plenty of exotic/ordinary hadrons have been reported by experiment collaborations, e.g. LHCb, Belle, and BESIII, etc.. In this review, we summarize the recent progress on the applications of partial wave dynamics combined with chiral effective field theories and dispersion relations, on related topics, with emphasis on $\pi\pi$, $\pi K$, $\pi N$ and $\bar{K}N$ scatterings.