How does the
S
11
N
*(890) state emerge from a naive
K
-matrix fit?
Yao Ma,Wen-Qi Niu,Yu-Fei Wang,Han-Qing Zheng
Table 1.
Fit I: poles obtained using equation (
3
).
Sheets
Pole positions on $\sqrt{s}$ plane in unit of GeV
I
1.36 − 0.65i
II
1.68 − 0.07i; 0.73 − 0.19i
III
1.68 − 0.07i; 0.92
IV
1.529 − 0.016i