Eur. Phys. J. C 22, 323-326 (2001)
Coupling constants and as derived from QCD sum rulesA. Gokalp and O. Yilmaz
Physics Department, Middle East Technical University, 06531 Ankara, Turkey
(Received: 5 July 2001 / Published online: 12 November 2001 - © Springer-Verlag / Società Italiana di Fisica 2001 )
We consider the two point correlation function of a scalar current in the QCD sum rule approach to estimate the overlap amplitude of the a0-meson. We then employ QCD sum rules to calculate the coupling constants and by studying the three point - and -correlation functions.
© Società Italiana di Fisica, Springer-Verlag 2001