The $f_0$ Mesons in Processes $ππ\toππ, K\bar{K}$ and Chiral Symmetry

Details The $f_0$ Mesons in Processes $ππ\toππ, K\bar{K}$ and Chiral Symmetry The $f_0$ Mesons in Processes $ππ\toππ, K\bar{K}$ and Chiral Symmetry

2002-03-02

arxiv.org/abs/hep-ph/0203019v1

AIP Conf.Proc.619:491-494,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LaTex; Talk at the 9th Int'l Conf. on Hadron Spectroscopy ``HADRON 2001'', Protvino, 25 Aug.-1 Sept. 2001

Scientific paper

10.1063/1.1482476

In a combined analysis of the experimental data on the coupled processes $\pi\pi\to\pi\pi,K\bar{K}$ in the channel with $I^GJ^{PC}=0^+0^{++}$, the following results are obtained in a model-independent way: 1) The $f_0(665)$ state with properties of the $\sigma$-meson is proved to exist; 2) it is shown that the ${f_0}(980)$ and especially ${f_0}(1370)$ (if exists) have a dominant $s{\bar s}$ component; 3) indications of the glueball nature of the $f_0(1500)$ and of a considerable $s{\bar s}$ component in the ${f_0}(1710)$ are obtained; 4) conclusion on the linear realization of chiral symmetry is drawn.

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