Forward dispersion relations for pion-kaon scattering and the K*0(800) resonance
arXiv:1607.03761
Abstract
We review our recent analysis of $ÏK$ scattering data in terms of forward dispersion relations, and also present the parameters of the strange resonances. This work consists of fits to the data that are constrained to satisfy analyticity requirements. The method yields a set of simple and consistent parameterizations that are compatible with forward dispersion relations up to 1.6 GeV while still describing the data. We also obtain the pole parameters of the $K^*_0(800)$ and the $K^*(892)$ resonances.
To appear in the proceedings of Excited QCD 2016, Costa do Caparica, Portugal, March 6-12