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

Ishida, Shin; Ishida, Muneyuki; Ishida, Taku; Takamatsu, Kunio; Tsuru, Tsuneaki

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

Authors

Description

Recently we have shown an evidence for existence of σ-particle in the previous works; where the ππS-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 KπS-wave phase shift from a similar standpoint, an evidence for existence of κ(900), possibly to be a member of σ-nonet.
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