*This preview shows
page 1. Sign up
to
view the full content.*

**Unformatted text preview: **angular momentum, charge, baryon number, and the three lepton numbers. The rest energy of the muon is 105.7 MeV, the rest energy of the electron is 0.511 MeV, and the rest energy of the neutrino is zero. Thus, the total rest energy before the decay is greater than the total rest energy after. The excess energy can be carried away as the kinetic energies of the decay products and energy can be conserved. Momentum is conserved if the electron and neutrino move away from the decay in opposite directions with equal magnitudes of momenta. Since the orbital angular momentum is zero, we consider only spin angular momentum. All the particles have spin = / 2 . The total angular momentum after the decay must be either = (if the spins are aligned) or zero (if the spins are antialigned). Since the spin before the decay is = / 2 angular momentum cannot be...

View
Full
Document