Speaker
Jose R. Pelaez
(Universidad Complutense de Madrid)
Description
We present a precise and model-independent dispersive determination from data of the existence and parameters of the lightest strange resonance. We use both subtracted and unsubtracted partial-wave hyperbolic and fixed-t dispersion relations as constraints on combined piK and pipi to KKbar data. We then use the hyperbolic equations for the analytic continuation of the isospinI=1/2 scalar partial wave to the complex plane, in order to determine the pole parameters and residue of the kappa or K0*(700) resonance.
Authors
Jose R. Pelaez
(Universidad Complutense de Madrid)
Mr
Arkaitz Rodas Bilbao
(William and Mary & Jefferson Lab)
Dr
Jacobo Ruiz de Elvira
(ITP, University of Bern)
