Observation of the $B_s^0\to J/\psi \varphi \varphi$ decay

LHCb collaboration, R. Aaij, B. Adeva +721

The $B_s^0\to J/\psi \varphi \varphi$ decay is observed in $pp$ collision data corresponding to an integrated luminosity of 3 fb${}^{-1}$ recorded by the LHCb detector at centre-of-mass ener…