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If the mass of neutrino is not zero, why we cannot find right-handed neutrinos and left-handed anti-neutrinos?
I am learning P&S's Introduction of quantum field theory. My teacher said that if the mass of neutrino is exactly 0, then we should not observe any right-handed neutrinos and left-handed anti-...
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Massless neutrinos and Chirality
The massless neutrinos can be represented by two component Weyl spinors. Then how does one say that it is an eigenstate of the chirality operator $\gamma^5$, which is a $4\times 4$ matrix and can act ...