${\overline{\mathrm{B}}}_{d,s}\to {\mathrm{K}}^{\ast 0}{\overline{\mathrm{K}}}^{\ast 0}$ decays, a serious problem for the Standard Model

Roy Aleksan, Luis Oliver

We underline the theoretical and experimental interest of the vector-vector penguin decays ${\overline{\mathrm{B}}}_{d,s}\to {\mathrm{K}}^{\ast 0}{\overline{\mathrm{K}}}^{\ast 0}$ for which the data show a s…