31. The quarks, leptons and W boson all have antiparticles with opposite electric charge. 32. Each generation is divided into two types of leptons and two types of quarks. 33. There's no simple vertex for W-> leptons of different generations. 34. Lepton number conservation is not writen on stone.35. Leptons are particles like electrons and neutrinos.36. For pioneering experimental contributions to lepton physics. 37. They are distinguished from the neutrinos by having opposite signs of lepton number and chirality. 38. The lepton beam in HERA became naturally transversely polarised through the Sokolov-Ternov effect. 39. The source current looks like a matter fermion field associated with baryon and lepton number. 40. This term also allows for lepton number violating pion decays, and for proton decay.
