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

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

2003-10-14

arxiv.org/abs/hep-ph/0310170v1

Eur.Phys.J.C33:s560-s562,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at the International Europhysics Conference on High Energy Physics - EPS 2003, July 17-23, Aachen, Germany. LaTex,

Scientific paper

10.1140/epjcd/s2003-03-525-2

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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