Recent Developments in Chiral Unitary Dynamics of Resonances

TL;DR

This paper reviews recent progress in understanding meson and baryon resonances as dynamically generated states from meson-meson and meson-baryon interactions, highlighting new insights into axial vector mesons and charm states.

Contribution

It introduces novel descriptions of axial vector mesons, charm scalar and axial states, and low-lying baryon resonances as dynamically generated through coupled channels.

Findings

Identification of two $K_1(1270)$ states.

Generation of open and hidden charm scalar and axial states.

Low-lying $1/2^+$ baryon resonances as meson-baryon bound states.

Abstract

In this talk I summarize recent findings made on the description of axial vector mesons as dynamically generated states from the interaction of peseudoscalar mesons and vector mesons, dedicating some attention to the two $K_1(1270)$ states. Then I review the generation of open and hidden charm scalar and axial states. Finally, I present recent results showing that the low lying $1/2^+$ baryon resonances for S=-1 can be obtained as bound states or resonances of two mesons and one baryon in coupled channels dynamics.