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Peláez Sagredo, José Ramón and Rodas Bilbao, Arkaitz and Ruiz de Elvira, J. (2017) Strange resonance poles from K π scattering below 1.8 GeV. European physical journal C, 77 (2). ISSN 14346044

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Official URL: http://dx.doi.org/10.1140/epjc/s1005201746681
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https://link.springer.com  Publisher 
Abstract
In this work we present a determination of the mass, width, and coupling of the resonances that appear in kaonpion 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 spintwo K(_1)(*) (1430) as well as the spinthree 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.
Item Type:  Article 

Additional Information:  © Springer 
Uncontrolled Keywords:  Chiral perturbationtheory; Partialwave analysis; 6 GevC; SWave; Reaction KP>Kπ&N; Equation analysis; Kapparesonance; Meson; System; Dispersion 
Subjects:  Sciences > Physics > PhysicsMathematical models Sciences > Physics > Mathematical physics 
ID Code:  43075 
Deposited On:  07 Jun 2017 12:50 
Last Modified:  10 Dec 2018 15:09 
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