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I recently read that neutrinos have a polarization property---their polarization is opposite to antineutrinos.

Is it possible to determine the polarization of a neutrino? For example, we can determine the polarization of a photon using a polarizing beamsplitter, V-polarizations will be reflected into detector A, and H-polarized photons will pass through into detector B.

Can we do something similar with neutrinos, something like a neutrino beamsplitter? (Of course, neutrino detectors are huge, but in theory?)

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    $\begingroup$ The right term for this degree of freedom is called helicity. $\endgroup$
    – Mauricio
    Commented Sep 11, 2023 at 0:59
  • $\begingroup$ As I understand it, given they're nonzero both in mass and spin they also have a nonzero magnetic moment. If memory serves its on the order of $10^{-19}$ that of the electron. So yes you could in theory measure such a quantity $\endgroup$
    – R. Rankin
    Commented Sep 11, 2023 at 2:51

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