Leptonic

Some articles on leptonic:

Properties - Leptonic Numbers
... each generation's weak isospin doublet are assigned leptonic numbers that are conserved under the Standard Model ... The antileptons have their respective generation's leptonic numbers of −1 ... Conservation of the leptonic numbers means that the number of leptons of the same type remains the same, when particles interact ...
Basic Properties - Charged Pion Decays
... primary decay mode of a pion, with probability 0.999877, is a purely leptonic decay into an anti-muon and a muon neutrino π+ → μ+ + ν μ π− → μ− + ν μ The second most common decay mode ... Besides the purely leptonic decays of pions, also observed have been some structure-dependent radiative leptonic decays (that is, decay to the usual leptons plus a gamma ray) ...