a(0)K(+)K(-) vertex in light cone QCD sum rules

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Gokalp A., Yilmaz O.

PHYSICAL REVIEW D, vol.69, no.7, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 69 Issue: 7
  • Publication Date: 2004
  • Doi Number: 10.1103/physrevd.69.074023
  • Journal Name: PHYSICAL REVIEW D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Middle East Technical University Affiliated: Yes

Abstract

We investigate the a(0)K(+)K(-) vertex in the framework of light cone QCD sum rules. We estimate the coupling constant g(a0)K(+)K(-) which is an essential ingredient in the analysis of physical processes involving the a(0)(980) meson. Our result is somewhat larger than the previous determinations of this coupling constant.