Charm-loop effect in $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and $B\to K^{\ast }\gamma$

A. Khodjamirian, Th. Mannel, A. A. Pivovarov +1

We calculate the long-distance effect generated by the four-quark operators with $c$-quarks in the $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ decays. At the lepton-pair invariant masses far below…