Inclusive ${\eta }^{\mathrm{\prime }}$ production in B decays and the Enhancement due to charged technipions

The new contributions to the charmless B decay $B\to X_s{\eta }^{\mathrm{\prime }}$ from the unit-charged technipions $P^{\pm }$ and $P_8^{\pm }$ are estimated. The technipions can provide a large enhancement to the inclusive branching ratio: $Br(B\to X_s{\eta }^{\mathrm{\prime }})\sim 7\times {10}^{-4}$ for $m_{p1}=100GeV$ and $m_{p8}=250\sim 350GeV$ when the effect of QCD gluon anomaly is also taken into account. The new physics effect is essential to interpret the CLEO data.