Neutrinos: Mass, Right & Left-Handed | Wang Yi

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Hi,
If neutrinos have mass, can "right-handed" and a "left-handed" change
to each other? Why we can only find left-handed ones?

Thank you.
Wang Yi
 
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Hold on,the antineutrinos are very well "right-handed".I think it's safe to say that explaining preferential chirality of neutrinos (& their antiparticles) is still an enigma within the SM of particles & interactions.

Daniel.
 
It is true that a LT can change the helicity of a neutrino with mass (which is usually negative) to positive. The designation LH or RH for particles is used to describe their weak interaction [(V-A) or (V+A)]. In this sense, even a neutrino with mass is LH. The handedness of leptons and quarks is built into the group structure of the Standard Model.
 
I see. Thank you.
 
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