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Open Questions about Neutrinos Today
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[QUOTE="john baez, post: 6435670, member: 8778"] Okay, so I'm not missing anything obvious! I actually think it's pretty good to take advantage of the fact that chirality reduces to helicity in the ultrarelativistic limit, since everyone can imagine a neutrino zipping along near the speed of light spinning clockwise along its axis of motion. Also, it's easy to convince people that the concept of "spinning clockwise along its axis of motion" isn't Lorentz-invarant [I]except [/I]for particles moving at the speed of light: if it's moving slower than light, just outrun the particle and now look at it. All this "gut-level intuition" is no substitute for talking about eigenvectors of ##\gamma_5## - but also, all that stuff about ##\gamma_5## is no substitute for these gut-level intuitions. Ideally we eventually get both, and then we can play them off against each other to figure stuff out efficiently. [/QUOTE]
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Open Questions about Neutrinos Today
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