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oai:docta.ucm.es:20.500.14352/178472024-09-04T16:39:13Zcom_20.500.14352_14col_20.500.14352_15

Peláez Sagredo, José Ramón Rodas Bilbao, Arkaitz Ruiz De Elvira Carrascal, Jacobo 2023-06-17T21:57:32Z 2023-06-17T21:57:32Z 2017-02-11 1434-6044 10.1140/epjc/s10052-017-4668-1 https://hdl.handle.net/20.500.14352/17847 http://dx.doi.org/10.1140/epjc/s10052-017-4668-1 https://link.springer.com In this work we present a determination of the mass, width, and coupling of the resonances that appear in kaon-pion scattering below 1.8 GeV. These are: the much debated scalar ĸ- meson, nowadays known as K(_1)(*) (800), the scalar K(_1)(*) (1430), the K*(892) and K(_1)(*) (1410) vectors, the spin-two K(_1)(*) (1430) as well as the spin-three K(_1)(*) (1780). The parameters will be determined from the pole associated to each resonance by means of an analytic continuation of the Kπ scattering amplitudes obtained in a recent and precise data analysis constrained with dispersion relations, which were not well satisfied in previous analyses. This analytic continuation will be performed by means of Pade approximants, thus avoiding a particular model for the pole parameterization. We also pay particular attention to the evaluation of uncertainties. eng https://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Strange resonance poles from K π scattering below 1.8 GeV journal article