The coupling constant g(ao pi eta) as derived from light-cone QCD sum rules

Gokalp A., Sarac Y., Yilmaz O.

MODERN PHYSICS LETTERS A, vol.19, no.40, pp.3011-3017, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 40
  • Publication Date: 2004
  • Doi Number: 10.1142/s0217732304015178
  • Journal Name: MODERN PHYSICS LETTERS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3011-3017
  • Middle East Technical University Affiliated: Yes

Abstract

We investigate the a(0)pieta-vertex in the framework of light-cone QCD sum rules. We estimate the coupling constant g(a0pieta) which is an essential ingredient in the analysis of physical processes involving a(0)(980) meson. We determine the decay width of the a(0) --> pi(0)eta decay and compare our result with experimental value.