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Lepton flavor is conserved at the weak vertex, I assume this gives us a way to tune an experiment to one of the neutrino flavors, but I since there are more electrons around than muons or tau, doesn't this mean that the vast majority of what we detect will be electron neutrinos? How did we confirm the existence of muon or tau neutrinos?

I heard that, and I'm both disappointed and concerned.

A lot of the papers I've read suggest this application is possible but I haven't seen anything definitive saying it's happened already. So my question is, has it? Is there anything currently in place today or is this application still in R&D?

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If a neutrino is produced and detected in effectively vacuum, AND the state oscillates completely adiabatically at all points in between, AND the baseline isn't known precisely so you can't know say how many oscillations any individual neutrino has gone through, then can there be any observed matter effects in the mixing? Or do you only observe matter effects if the matter potential at the production/detections points differ, or if some non-adiabatic transition happens?

I'm thinking specifically about the day-night effect for solar neutrinos, where you don't know the baseline distance well enough to discern individual oscillations, so you just get averaged survival/transition probability. Basically my question is does the day-night effect being observable require some non-adiabatic transition in the Earth? If the Earth didn't have abrupt transitions would there be no significant day-night effect?

What are some good resources for learning about the cosmological constraints on the number of neutrinos, and on the neutrino mass and any other common neutrino constraints from cosmology. I know there's some info about neutrinos to be gleaned by looking at the CMB b/c the CNB was produced just before the CMB and that left some variety of imprint. But I don't think I've ever had a good explain-it-like-I'm-5 explanation and I think that's what I need b/c my understanding of the subject is pretty bad. So if anyone has anyone knows any good resources on that subject I'd be appreciative.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.