S-matrix Bases and Relation between pi pi Scattering and Production Amplitudes

Details S-matrix Bases and Relation between pi pi Scattering and Production Amplitudes S-matrix Bases and Relation between pi pi Scattering and Production Amplitudes

2000-12-23

arxiv.org/abs/hep-ph/0012323v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

proc. of ``Possible Existence of sigma-Meson and Its Implication to Hadron Physics," YITP, Kyoto, June 12--14, 2000. 6 pages,

Scientific paper

It is stated that the requirement of unitarity and of analyticity should be made on the S-matrix elements with right bases, and the ``universality argument" made with the bases, which do not regard quark physical picture, is not right. Accordingly the result of the conventional analyses of the pi pi production amplitudes following to this argument, leading to non-existence of the light sigma-meson, is proved to lose its theoretical bases.

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