Coupling constants g alpha(0)omega gamma and g alpha(0)p gamma as derived from QCD sum rules
EUROPEAN PHYSICAL JOURNAL C, vol.22, no.2, pp.323-326, 2001 (SCI-Expanded, Scopus)
- 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
- Open Archive Collection: AVESIS Open Access Collection
- 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.