37 citations · 158 across the 14 of their papers we have counts for
9 papers · 1 filter
How does the state emerge from a naive matrix fit?
Yao Ma, Wen-Qi Niu, Yu-Fei Wang +1
We give a pedagogical analysis on matrix models describing the scattering amplitude, in channel at low energies. We show how the correct use of analyticity in the…
Discussions on the Line-shape of Resonance
Qin-Fang Cao, Hong-Rong Qi, Yu-Fei Wang +1
A careful reanalysis is made on processes, aiming at resolving the apparent conflicts between Belle and BESIII data above th…
New Insights on Low Energy Scattering Amplitudes: Comprehensive Analyses at Level
Yu-Fei Wang, De-Liang Yao, Han-Qing Zheng
A production representation of partial-wave matrix is utilized to construct low-energy elastic pion-nucleon scattering amplitudes from cuts and poles on complex Riemann sheets.…
The pole structure of low energy scattering amplitudes
Yu-Fei Wang
This report presents an investigation of the pion-nucleon elastic scattering in low energy region using a production representation of the partial wave matrix. The phase shifts…
On the Existence of Resonance in Channel of Scatterings
Yu-Fei Wang, De-Liang Yao, Han-Qing Zheng
Low-energy partial-wave scattering data is reexamined with the help of the production representation of partial-wave matrix, where branch cuts and poles are thoroughly und…
New Insights on Low Energy Scattering Amplitudes
Yu-Fei Wang, De-Liang Yao, Han-Qing Zheng
The - and - wave phase shifts of low-energy pion-nucleon scatterings are analysed using Peking University representation, in which they are decomposed into various terms cont…