Why are neutrinos so light, and what fixes their masses?
Neutrino oscillations show that the propagation states have different masses, while their absolute scale and origin require more information. OPH seeks to derive particle labels, mass operators and measured responses from the same native observer process. A finite generation register or a chosen mixing matrix is not yet an explanation of the observed splittings. The calculation must produce the spectrum and mixing while keeping fitted inputs separate from predictions. Different constructions can also make different assumptions about whether neutrinos are their own antiparticles. The question therefore cannot be answered by naming a defect class alone. The relevant OPH stance is constructive: derive the actual neutrino response and test it against the oscillation and absolute-mass constraints.
See also What is a neutrino?, Why are there three generations of matter?, Why do particles have the masses they have?
Sources: Particles from Native Overlap Transport
Also in Chapter 30: Why Do the Masses Land Where They Do?, Chapter 33: Why Was Every Open Problem the Same Problem?.
This answer comes from OPH, Observer Patch Holography. OPH is a rigorous, consistent and complete description of the unified, self-creating computational Universe we inhabit. Its consistency is machine-checked: the fixed point at its core is constructed explicitly, and a theory with a model contains no contradiction.
To understand OPH and check every step yourself, start with the free book Reverse Engineering Reality. It builds the theory from the ground up, and the OPH Notebook answers your questions while you read.
read the free bookask the notebookor ask sage:read chapter 27: Why This Exact List of Matter, and Why Three Times Over?watch a universe make its own particles