  The bounds on the values of gluon, four-quark and quark-gluon condensates are
derived from the requirement of consistency of the sum rules for various
correlators of the hybrid current $a_{\mu}=g\bar d\gamma_{\rho}\tilde
G_{\rho\mu}u$. The upper bound for the gluon condensate is found to be less
then twice its standard value while for the four-quark condensates the
violation of factorization by a factor 3-4 is allowed. The value of the
quark-gluon condensate is given as a function of $\left<\frac{\alpha_s}{\pi}
G^2\right>$ and $\left<(\bar q\Gamma q)^2\right >$ which for the standard
values yields $m_0^2=0.63~\mbox{GeV}^2$ . Our procedure of simultaneous
solution of a number of sum rules allows the quantitative error analysis and is
appropriate for condensate determination also in other cases.

High Energy Physics - Phenomenology