Why Do Neutrinos and Anti-Neutrinos Oscillate Differently?

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SUMMARY

Neutrinos and anti-neutrinos exhibit different oscillation behaviors, a phenomenon highlighted by the LSND experiment in the 1990s, which detected an unexpected excess of oscillation from anti-muon neutrinos to anti-electron neutrinos. In contrast, the MiniBoone experiment (2002-2005) confirmed this discrepancy when it switched to antineutrinos, aligning with LSND's findings. This suggests a fundamental difference in the behavior of neutrinos and anti-neutrinos, challenging existing frameworks within the Standard Model of particle physics.

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They don't. The article was just wrong, and the reporter didn't know what he was talking about.
 
Why do neutrinos and anti-neutrinos oscillate differently?
Whether they do or not, and if they do, why, is a long-standing unresolved issue. The LSND neutrino oscillation experiment back in the 1990's seemed to see an excess oscillation from anti-muon neutrino to anti-electron neutrino. More than was expected, and difficult to explain. The MiniBoone experiment which ran from 2002 to 2005 looked at muon neutrino to electron neutrino, and to everyone's relief did not see an excess. But then they switched to using antineutrinos, and got a result confirming the one from LSND! This seemed to imply that neutrinos and antineutrinos behave differently.

See here and here for a summary.
 

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