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by GOONIMMUNE
1729 days ago
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> Now, to be fair, neutrino-mixing in and by itself isn’t all that weird. Indeed, quarks also do this mixing, it’s just that they don’t mix as much. That *neutrinos mix is weird because neutrinos can only mix if they have masses. But we don’t know how they get masses. Could someone explain to a layman why "neutrinos can only mix if they have masses"? Perhaps I don't understand what it means to "mix" |
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Particles without mass are required to travel at the speed of light. Particles traveling at the speed of light don't experience time in their own frame of reference. For instance a photon is emitted and absorbed at the same instance from its point of view. So they have no time to do anything like change properties.