in a very similar vein, i doubt most people are aware that there isn’t a fundamental theory of physics that accounts for neutrino mass. in the standard model, they’re just massless. there are theories that accurately describe neutrino mass eigenstates, to be clear, but it’s still unknown why their mass and flavor eigenstates differ.
in a very similar vein, i doubt most people are aware that there isn’t a fundamental theory of physics that accounts for neutrino mass. in the standard model, they’re just massless. there are theories that accurately describe neutrino mass eigenstates, to be clear, but it’s still unknown why their mass and flavor eigenstates differ.