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by SaberTail
1679 days ago
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That's correct. The more jargon-y way to say it would be that for massive particles, helicity isn't Lorentz invariant. It's an approximation that helicity equals chirality (which is what matters for weak force interactions), but this approximation is pretty good for particles moving close to the speed of light (which neutrinos tend to do, due to their low mass) |
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