Photon polarization in $B\to K_{\rm res}γ$

In this talk, I introduce recently proposed method for measuring the photon polarization in $B\to K_{\rm res}γ$. It is also shown that anomalous right-handed top couplings can severely affect the photon polarization without spoiling the well measured branching ratio of $B\to X_sγ$. Estimated number of $B$ mesons needed for measuring the photon polarization is already within the reach of current $B$ factories.

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