Strong constraints on the $b\to s\gamma$ photon polarisation from $B^0\to K^{\ast 0}{e}^{+}{e}^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +976

An angular analysis of the $B^0\to K^{\ast 0}{e}^{+}{e}^{-}$ decay is performed using a data sample corresponding to an integrated luminosity of $9{\mathrm{fb}}^{-1}$ of $pp$ collisions collect…