The only quantities which are conserved in black hole formation and evaporation have to be visible outside the black hole, and only quantities like the electric and magnetic field, gauge fields, poke out of a black hole to affect its decay. In theory, it is impossible for Lepton number to be exactly conserved, because unlike electric charge, it does not come with an electric field associated to it. This process would be a direct experimental confirmation of the above theory of the origin of neutrino masses. ![]() the IRS responded: This answer is completely unacceptable and an insult to this government institution. Since it has no electrons, Administratium is inert. The first decays to a proton and an electron and an electron anti-neutrino (conserving lepton number), then the anti-neutrino flips to a neutrino (by neutrino mass), and the neutrino is absorbed by the second neutron, causing it to decay into a proton and an electron. These 312 particles are held together by a force called morons, which are surrounded by vast quantities of lepton-like particles called peons. The nuclear physicists are searching for what is called "neutrinoless double-beta decay", a process where two neutrons decay in a nucleus nearly simultaneously. So the neutrino and the antineutrino are not separate objects, they are two helicities which make up one massive particle, so lepton number cannot be conserved. The momentum flips, but the spin stays the same, so the helicity is opposite. You can chase a massive neutrino faster and faster, until you see it stopped in your frame, then going the other way faster and faster. The observed tiny neutrino mass matches with this prediction so well, that it is all but certain that this explanation is correct.īut this mechanism violates lepton number, because a neutrino field has only one chirality, so that the massless neutrino has one helicity, while an antineutrino has an opposite helicity. This leads to a mass which is suppressed by the scale at which the two Higgs boson absorptions are not simultaneous, and if this scale is about $10^$ GeV, the mass of the neutrinos turns out to be $.01 eV$, which is what is observed. By far the most likely explanation is that the masses are small non-renormalizable corrections to the standard model, due to neutrinos scattering off two Higgs bosons at once, a non-renormalizable two-fermion-two-scalar interaction. The observation of neutrino masses, however, means that the standard model is incomplete. That's it for the renormalizable lepton interactions in the standard model. Electromagnetic processes either produce or remove electron/positron pairs (which is net zero lepton number change), while weak interactions will produce electrons together with electron-antineutrinos (again, zero lepton number change). The reason for the conservation of lepton number is only because the low-energy interactions are renormalizable- which implies that only two fermions at most can take part in an interaction, along with one boson (a scalar or a vector). The total lepton number is the sum of the electron, muon, and tau number. ![]() The muon number and tau number are defined similarly. The electron number is just the number of electrons plus neutrinos, minus the number of antielectrons and antineutrinos. To him, it was a sign that the people had got severed from the land.The lepton number is just a conserved quantity in all observed processes, with the almost certain exception of neutrino oscillations. Whatever country of the world it was, the poor were starting to look alike, live alike, eat alike, and dress alike in the same kind of clothes all made in the same part of China. He said it hit him travelling one time in the year or so before he met my mother.
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