Measurement of the $B_s^0\to \varphi \varphi$ branching fraction and search for the decay $B^0\to \varphi \varphi$

LHCb collaboration, R. Aaij, B. Adeva +724

Using a dataset corresponding to an integrated luminosity of 3.0 fb${}^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV, the $B_s^0\to \varphi \varphi$ branching frac…