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A comment on Record-breaking neutrino is most energetic ever detected. Parent comment

Re:Record-breaking neutrino is most energetic ever detected by pfdietz on Wednesday February 12, 2025 @04:08PM (#43029799)
The mean free path of much lower energy neutrinos in lead is about a light year.

The MFP of a 120 PeV neutrino in lead would be something like 10 kilometers, I think.

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Re:Record-breaking neutrino is most energetic ever detected by cozzyd on Wednesday February 12, 2025 @05:38PM (#43030531)
More like 100 km I'd think but yeah, the neutrino nucleon cross section gets much bigger at high energies
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