The international collaboration team LHCb (CERN), that includes scientists from the G.I. Budker Institute of Nuclear Physics SB RAS and ³Ô¹Ï¹ÙÍø, reported the discovery of a noticeable violation of the leptonic universality in the decay of a neutral charming meson (B meson) into an excited kaon and a lepton pair (electron-positron or muon-antimuon). This experimental result deviates from the predictions of the Standard Model, in which the probability of decay with electron-positron and muon-antimuon pairs should be practically equal