The $a_0{K}^{+}{K}^{-}$-vertex in light cone QCD sum rules

Abstract

We investigate the $a_0{K}^{+}{K}^{-}$-vertex in the framework of light cone QCD sum rules. We estimate the coupling constant g${}_{a_0{K}^{+}{K}^{-}}$ which is an essential ingredient in the analysis of physical processes involving $a_0(980)$ meson. Our result is somewhat larger than the previous determinations of this coupling constant.

8 pages, 1 figure

References in corpus (4)

• A low-lying scalar meson nonet in a unitarized meson model
• The new analysis of the KLOE data on the phi->eta pi0 gamma decay
• Exploring Light-Cone Sum Rules for Pion and Kaon Form Factors
• Coupling $g_{f_0{K}^{+}{K}^{-}}$ and the structure of $f_0(980)$