P-wave pi pi amplitude from dispersion relations
arXiv:1005.5562 · doi:10.1103/PhysRevD.82.036006
Abstract
We solve the dispersion relation for the P-wave pi pi amplitude.We discuss the role of the left hand cut vs Castillejo-Dalitz-Dyson (CDD), pole contribution and compare the solution with a generic quark model description. We review the the generic properties of analytical partial wave scattering and production amplitudes and discuses their applicability and fits of experimental data.
10 pages, 7 figures, typos corrected, reference added