Exclusive B → K*l+l- Decay with Polarized K* and Fourth Generation Effect

Polarization of K* in the rare B → K*l+l- decay governed by the quark level transitions b → s, are investigated in the fourth quark generation model popularly known as SM4. We find that in this model due to the additional contributions coming from the heavy t' quark in the loop, the observables related to the polarization of K* deviate significantly from their SM values. Some of the physical observables are within the reach of LHCb experiment and search for such channels are strongly argued. (author)