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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 1434-6044

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Official URL: http://dx.doi.org/10.1140/epjc/s10052-017-4668-1

## Abstract

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.

Item Type: | Article |
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Additional Information: | © Springer |

Uncontrolled Keywords: | Chiral perturbation-theory; Partial-wave analysis; 6 Gev-C; S-Wave; Reaction K-P->Kπ&N; Equation analysis; Kappa-resonance; Meson; System; Dispersion |

Subjects: | Sciences > Physics > Physics-Mathematical 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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