Dispersive analysis of the κ/K0*(700) meson and other light strange resonances
Departamento de Física Teórica and IPARCOS. Universidad Complutense, 28040, Madrid, Spain
2 Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
Published online: 17 June 2019
We briefly review our recent works where we use dispersion relations to constrain fits to data on πK → πK and providing a simple but consistent description of these processes. Then, simple analytic methods allow to extract parameters of poles associated to light strange resonances without assuming a particular model. We also present preliminary results on a model-independent determination of the controversial κ or resonance parameters, by using those constrained parameterizations as input for partial-wave hyperbolic dispersion relations that allow to perform a rigorous analytic continuation to determine its associated pole.
© The Authors, published by EDP Sciences, 2019
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