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Open Questions about Neutrinos Today
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[QUOTE="john baez, post: 6435436, member: 8778"] I meant the three mass eigenstates that most closely line up with the electron, muon, and tau flavor eigenstates. I need some nontechnical way to say what I mean. This is for ordinary folks, so words like "eigenstate" are not allowed. I guess the best way is something like this: "Is there a massless neutrino, or do they all have nonzero mass?" I'm interested that you think maybe it's no longer possible to get a theory with one massless neutrino and two massive ones to fit the data. Back when I was paying attention it was theoretically possible. Okay. I haven't been keeping up with this stuff for the last decade or so. If experts feel pretty convinced that normal ordering is the right scenario, this question shouldn't be on the list! I meant chirality, and I meant "in the limit as the speed approaches c". I don't know a great way to state this question to nonexperts without using words like "helicity" and "chirality", which I'd rather avoid. How does the sterile one mix with the others? Does it only couple to them via the Higgs or some other mass-generating mechanism? If so I think my description was not too bad. As long as it's a question lots of physicists are asking, it can be on this list. But actually it could be better to ask a more general question, like "Are there extra neutrinos beyond the three known ones and their three possible right-handed counterparts?" [/QUOTE]
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Open Questions about Neutrinos Today
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