Coupling $g_{f_0 K^+ K^-}$ and the structure of $f_0(980)$

Details Coupling $g_{f_0 K^+ K^-}$ and the structure of $f_0(980)$ Coupling $g_{f_0 K^+ K^-}$ and the structure of $f_0(980)$

2003-01-30

arxiv.org/abs/hep-ph/0301267v2

Phys.Lett.B559:49-59,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex, 15 pages, 2 eps figures

Scientific paper

10.1016/S0370-2693(03)00308-3

We use light-cone QCD sum rules to evaluate the strong coupling $g_{f_0 K^+
K^-}$ which enters in several analyses concerning the scalar $f_0(980)$ meson.
The result: $6.2\le g_{f_0 K^+ K^-}\le 7.8$ GeV is larger than in previous
determinations.

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