Analysis of Kπ-scattering phase shift and existence of κ(900)-particle

Details Analysis of Kπ-scattering phase shift and existence of κ(900)-particle Analysis of Kπ-scattering phase shift and existence of κ(900)-particle

1997-05-27

arxiv.org/abs/hep-ph/9705437v1

Prog.Theor.Phys.98:621-629,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

tex with PTP style, 2 eps figures

Scientific paper

10.1143/PTP.98.621

Recently we have shown an evidence for existence of \sigma-particle in the previous works; where the \pi\pi S-wave phase shift is reanalyzed, by introducing a repulsive background suggested by the chiral symmetry, and by applying a new method of Interfering Breit-Wigner Amplitudes. In this work we also show, reanalyzing the K\pi S-wave phase shift from a similar standpoint, an evidence for existence of \kappa(900), possibly to be a member of \sigma-nonet.

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