Coupling constants g alpha(0)omega gamma and g alpha(0)p gamma as derived from QCD sum rules

Creative Commons License

Gokalp A., Yilmaz O.

EUROPEAN PHYSICAL JOURNAL C, vol.22, no.2, pp.323-326, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 2
  • Publication Date: 2001
  • Doi Number: 10.1007/s100520100801
  • Journal Name: EUROPEAN PHYSICAL JOURNAL C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.323-326
  • Middle East Technical University Affiliated: Yes

Abstract

We consider the two point correlation function of a scalar current in the QCD sum rule approach to estimate the overlap amplitude of the a(o)-meson. We then employ QCD sum rules to calculate the coupling constants g(omegaaogamma) and g(rhoaogamma) by studying the three point a(o)omegagamma- and a(o)rhogamma-correlation functions.