Photon polarization with anomalous right-handed top couplings in Bto K_(res)γ

The effect of anomalous right-handed top couplings on the photon polarization in $B\to K_{\rm res}\gamma$ is investigated. It is recently reported that the photon polarization can be measured through the up-down asymmetry of the photon direction relative to the subsequent $K_{\rm res}$ decay plane. We find that the anomalous couplings can severely affect the photon polarization without spoiling the well measured branching ratio of $B\to X_s\gamma$. Different features from other scenarios are also discussed.