Han-Qing Zheng

collaborators

2 papers

hep-ph2024

Double pion photoproduction off nucleons in covariant chiral perturbation theory

Kai-Ge Kang, Xiong-Hui Cao, De-Liang Yao +1

The double pion photoproduction off nucleons near threshold is analyzed in a covariant baryon chiral perturbation theory up to next to leading order, where the $Δ (1232)$ , $N^*(1400…

nucl-th2021

Dispersive analysis of low energy $γ^{*} N \to π N$ process

Xiong-Hui Cao, Yao Ma, Han-Qing Zheng

We use a dispersion representation based on unitarity and analyticity to study the low energy $γ^{*} N \to π N$ process in the $S_{11}$ channel. Final state interactions among…

Double pion photoproduction off nucleons in covariant chiral perturbation theory

Dispersive analysis of low energy γ∗N→πN process

Dispersive analysis of low energy $γ^{*} N \to π N$ process