An angular analysis of $B^0\rightarrow K^{ *0}e^{ +}e^{ -}$ decays is presented using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb$^{ -1}$. The analysis is performed in the region of the dilepton invariant mass squared of 1.1-6.0 GeV$^{ 2}/c^{ 4}$. In addition, a test of lepton flavour universality is performed by comparing the obtained angular observables with those measured in $B^0\rightarrow K^{ *0}\mu^{ +}\mu^{ -}$ decays. In general, the angular observables are found to be consistent with the Standard Model expectations as well as with global analyses of other $b \rightarrow s \ell^{ +} \ell^{ -}$ processes, where $\ell$ is either a muon or an electron. No sign of lepton-flavour-violating effects is observed.
Categories: hep-ex