The pion-kaon scattering amplitude constrained with forward dispersion relations up to 1.6 GeV

Understand

In this work we provide simple and precise parameterizations of the existing $\pi K$ scattering data from threshold up to 1.6 GeV, which are constrained to satisfy forward dispersion relations as well as three additional threshold sum rules.

• We also provide phenomenological values of the threshold parameters and of the resonance poles that appear in elastic scattering.