Eur. Phys. J. C 22, 323-326 (2001)
DOI: 10.1007/s100520100801
Coupling constants
and
as derived
from QCD sum rules
A. 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 )
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
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