+ ... \nonumber\\
&\approx& 1 - 0.073 -0.025 - 0.009 +\ldots   \\
\frac{\langle \Omega_{cc}^{\diamond}|\bar cc|\Omega_{cc}^{\diamond}\rangle
}{2M_{\Omega_{cc}^{\diamond}}} &=& 1 -
\frac{1}{2}v_c^2 -
\frac{1}{3}\frac{M_{\Omega_{cc}^{\diamond *}}-M_{\Omega_{cc}^{\diamond}}}{m_c}
- \frac{5 g^2}{18 m_c^3}|\Psi (0)|^2 + ... \nonumber\\
&\approx& 1 - 0.078 -0.025 - 0.009 +\ldots \\
\frac{\langle \Xi_{bc}^{\diamond}|\bar
cc|\Xi_{bc}^{\diamond}\rangle }{2M_{\Xi_{bc}^{\diamond}}} &=& 1 -
\frac{1}{2}v_c^2 + \frac{g^2}{3m_bm_c^2}|\Psi^d (0)|^2 -
\frac{1}{6m_c^3}g^2|\Psi^d (0)|^2 + \ldots
\nonumber\\ &\approx& 1 - 0.098 + 0.006 - 0.010\ldots \\
\frac{\langle \Omega_{bc}^{\diamond}|\bar
cc|\Omega_{bc}^{\diamond}\rangle }{2M_{\Omega_{bc}^{\diamond}}} &=& 1 -
\frac{1}{2}v_c^2 + \frac{g^2}{3m_bm_c^2}|\Psi^d (0)|^2 -
\frac{1}{6m_c^3}g^2|\Psi^d (0)|^2 + \ldots
\nonumber\\ &\approx& 1 - 0.099 + 0.006 - 0.010\ldots  \\
\frac{\langle \Xi_{bb}^{\diamond}|\bar bb|\Xi_{bb}^{\diamond}\rangle
}{2M_{\Xi_{bb}^{\diamond}}} &=& 1 -
\frac{1}{2}v_b^2 -
\frac{1}{3}\frac{M_{\Xi_{bb}^{\diamond *}}-M_{\Xi_{bb}^{\diamond}}}{m_b}
- \frac{5 g^2}{18 m_b^3}|\Psi (0)|^2 + ... \nonumber\\
&\approx& 1 - 0.021 -0.003 - 0.002 +\ldots   \\
\frac{\langle \Omega_{bb}^{\diamond}|\bar bb|\Omega_{bb}^{\diamond}\rangle
}{2M_{\Omega_{bb}^{\diamond}}} &=& 1 -
\frac{1}{2}v_b^2 -
\frac{1}{3}\frac{M_{\Omega_{bb}^{\diamond *}}-M_{\Omega_{bb}^{\diamond}}}{m_b}
- \frac{5 g^2}{18 m_b^3}|\Psi (0)|^2 + ... \nonumber\\
&\approx& 1 - 0.021 -0.003 - 0.002 +\ldots\end{aligned}$$ The numerical values of parameters used in the calculations above are given in the next section. Our presentation here is less detailed than in previous papers [@DHD1; @DHD2]. However, we hope, that the interested reader can find there all needed details.

Analogous expressions may be obtained for the matrix elements of operator $Qg\sigma_{\mu\nu}G^{\mu\nu}Q$ 