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On the coupling $g_{f_0K^+K^-}$ and the structure of $f_0(980)$

Fulvia De Fazio
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Abstract

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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Fulvia De Fazio. 2003-10-14. On the coupling $g_{f_0K^+K^-}$ and the structure of $f_0(980)$. https://doi.org/10.1140/epjcd%2Fs2003-03-525-2

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