Light Scalar Mesons from Phi to Psi

Details Light Scalar Mesons from Phi to Psi Light Scalar Mesons from Phi to Psi

2006-05-11

arxiv.org/abs/hep-ph/0605126v1

Nucl.Phys.Proc.Suppl.162B:127-134,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 7 figures. Talk presented by N.N. Achasov at the International Workshop "e+e- Collisions from Phi to Psi", February 2

Scientific paper

10.1016/j.nuclphysbps.2006.09.07

The following topics are considered. 1) Confinement, chiral dynamics, and light scalar mesons. 2) Chiral shielding of the $\sigma(600)$. 3) The $\phi$ meson radiative decays about nature of light scalar resonances. 4) The $J/\psi$ decays about nature of light scalar resonances. 5) The $a_0(980)\to\gamma\gamma$ and $f_0(980)\to\gamma\gamma$ decays about nature of light scalar resonances. 6) New round in $\gamma\gamma\to\pi^+\pi^-$, the Belle data. Arguments in favor of the four-quark model of the $a_0(980)$ and $f_0(980)$ mesons are given.

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