A review on partial-wave dynamics with chiral effective field theory and dispersion relation
De-Liang Yao, Ling-Yun Dai, Han-Qing Zheng, Zhi-Yong Zhou
Abstract
Abstract The description of strong interaction physics of low-lying resonances is out of the valid range of perturbative QCD. Chiral effective field theories (EFTs) 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 EFTs and dispersion relations, on related topics, with emphasis on ππ , πK , πN and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"> <mml:mrow> <mml:mover accent="true"> <mml:mrow> <mml:mi>K</mml:mi> </mml:mrow> <mml:mo>̄</mml:mo> </mml:mover> </mml:mrow> <mml:mi>N</mml:mi> </mml:math> scatterings.