Complete analysis on the next-to-leading order supersymmetric QCD corrections to \bar{B}^0 - B^0 mixing

We present a complete next-to-leading-order calculation of the QCD correction to $B^0-\bar{B}^0$ ($K^0-\bar{K}^0$) mixing in the framework of the minimal flavor violating (MFV) supersymmetry. We take into account the contribution from the gluinos and find that the gluino-mediated corrections modify the LO result obviously when the mass of gluinos $m_{\tilde{g}} \gg m_{w}$. In general, one cannot neglect contributions of gluino.