A Study on the Correlation Between Poles and Cuts in ππ Scattering*

Ling-Yun Dai,Xian-Wei Kang,Tao Luo,Ulf-G. Meiβner

Fig. 3 (Color online) Comparison of different solutions of the $\pi\pi$ scattering amplitudes. The solid lines are the real part of the amplitudes and other lines are the imaginary part. The green lines are from Case A, the cyan lines are from Case B, and the black lines are from Case C. The red lines are from K-Matrix[7] for isospin 0 S-wave, and the violet lines are from CFDIV[22] for isospin 1 P-wave. Note that the lines of K-matrix and/or CDFIV are overlapped with our fits in the elastic region, or even a bit further in the inelastic region.