Recent content by benjammin

The problem doesn't specify a frame in which the angle is being measured, nor goes it give any initial conditions like the energy of the neutrino beam. I'm actually writing a solutions manual for a textbook that is in progress, so it could be the case that the problem is just not workable as...

Hi all, I'm working on a problem about neutrino-electron scattering $$\overline\nu_ee^-\to e^-\overline\nu_e.$$ The problem says to prove that the maximum angle of emission for the recoil electron relative to the neutrino beam is $$\sqrt{{2m\over E}},$$ but I have worked on this for hours and...

Does anyone know why the $$\rho^0\to\pi^0\gamma$$ decay is suppressed? I've been working on it, and so far I think it can conserve parity, charge conjugation, angular momentum, etc. But the PDG indicates that it basically never happens. Why? Thanks!