Angular analysis of B⁰→ K^*0e⁺e⁻ decays

An angular analysis of B⁰→ K^*0e⁺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 GeV²/c⁴. In addition, a test of lepton flavour universality is performed by comparing the obtained angular observables with those measured in B⁰→ K^*0μ⁺μ⁻ 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 → sℓ⁺ℓ⁻ processes, where ℓ is either a muon or an electron. No sign of lepton-flavour-violating effects is observed.