Hua-Zhong Guo

collaborators

2 papers

hep-ph2025

$ρ \to π π$ Hadronic Decay in the Nambu-Jona-Lasinio Model: Mass-Width Interplay and Beyond-RPA Corrections

Qing-Wu Wang, Xiao-Fu Ł\textü, Hua-Zhong Guo

We present a novel framework for analyzing unstable composite particles using Green's functions and dispersion relations. As an illustrative example, we explore the $ρ$ vector meso…

hep-ph2023

Temperature and volume dependence of pion-pion scattering lengths

Qing-Wu Wang, Hua-Zhong Guo

The s-wave pion-pion scattering lengths $a_{0}$ and $a_{2}$ are studied at finite temperature and in finite spatial volume under the framework of the Nambu--Jona-Lasinio model. Wit…

ρ→ππ Hadronic Decay in the Nambu-Jona-Lasinio Model: Mass-Width Interplay and Beyond-RPA Corrections

Temperature and volume dependence of pion-pion scattering lengths

$ρ \to π π$ Hadronic Decay in the Nambu-Jona-Lasinio Model: Mass-Width Interplay and Beyond-RPA Corrections