Properties of sigma and kappa Production Amplitudes

Details Properties of sigma and kappa Production Amplitudes Properties of sigma and kappa Production Amplitudes

2003-08-29

arxiv.org/abs/hep-ph/0308308v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

proc.of Nihon univ. and KEK symposium, Tokyo, Feb 24-26, 2003. 9 pages uses ptptex.sty

Scientific paper

Our method of analysis, which led to existence of sigma and kappa mesons, is reviewed and examined from a viewpoint of general S-matrix. It is shown that the method is consistent with the constraints from chiral symmetry and unitarity. Accordingly the long-believed common analyses of pipi (Kpi) scattering and production processes, based on elastic unitarity, prove to lose its theoretical base. The observed phase motion by 180 degrees of sigma shows also the validity of our method.

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