Direct obeservations of tau neutrinos have confirmed the fifteen year old evidence that there are three generations of neutrinos that oscillate from one type to the other, and that they have mass.
The widely expected discovery confirms a part of the Standard Model of Particle Physics that is not widely questioned, without providing answers that clarify the unanswered questions that mainstream physicists have about neutrinos.
Further data from the same experiement should allow us to find tune mass estimates for the different types of neutrinos by allowing us to more accurately measure the ratio of the different neutrino types to each other. Neutrinos are hard to measure because they are so small and interact little with other types of matter.
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