%0 Journal Article
%A Peláez Sagredo, José Ramón
%A Rodas, A.
%T Determination of the lightest strange resonance K-0*(700) or kappa, from a dispersive data analysis
%D 2020
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/6268
%X In this work we present a precise and model-independent dispersive determination from data of the existence and parameters of the lightest strange resonance kappa/K-0*(700). We use both subtracted and unsubtracted partial-wave hyperbolic and fixed-t dispersion relations as constraints on combined fits to pi K -> pi K and pi pi -> K (K) over bar data. We then use the hyperbolic equations for the analytic continuation of the isospin I = 1/2 scalar partial wave to the complex plane, in order to determine the kappa/K-0*(700) and K* (892) associated pole parameters and residues.
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