RT Journal Article
T1 Determination of the lightest strange resonance K-0*(700) or kappa, from a dispersive data analysis
A1 Peláez Sagredo, José Ramón
A1 Rodas, A.
AB 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.
PB American Physical Society
SN 0031-9007
YR 2020
FD 2020-04-30
LK https://hdl.handle.net/20.500.14352/6268
UL https://hdl.handle.net/20.500.14352/6268
LA eng
NO © 2020 American Physical Society.This project has received funding from the MINECO Spanish Grant No. FPA2016-75654-C2-2-P and the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 824093 (STRONG2020). A. R. would like to acknowledge the financial support of the U.S. Department of Energy Contract No. DE-SC0018416 and of the Universidad Complutense de Madrid.
NO Unión Europea. H2020
NO Ministerio de Economía y Competitividad (MINECO)
NO United States Department of Energy (DOE)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 22 abr 2025