Theory Deep Dives — Part 3: The PMNS matrix and three-flavor mixing
The 3×3 matrix that connects neutrino flavor states to mass states — its parameters, what we know about them, and how it produces oscillation.
Tag
mixing
2 articles tagged with mixing.
Why three generations? The flavor puzzle that won't go away
The Standard Model contains three nearly-identical copies of the basic fermion structure. Two of those copies have masses ranging from 100 MeV to 173 GeV. Why three? Why these particular masses? Why this exact pattern? Decades of theory have failed to produce a satisfying answer.