Notes on $B\to K^{\ast }\gamma$

Damir Becirevic

We analyzed two form factors $T_1(q^2)$ and $T_2(q^2)$ which enter the $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decay rate and are accessible in the lattice calculations for $B\to K^{\ast }\gamma$. The ext…