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Revision as of 18:38, 5 October 2001 by DrBob (talk | contribs) (link to solar neutrino problem)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)A neutrino is a neutral particle with very low mass, possibly zero. It has spin 1/2 and so is a fermion. It does not interact with the strong force or the electromagnetic force, but does interact with the weak force (and with gravity if it turns out to have mass).
It comes in three varieties, the electron neutrino νe, the muon neutrino νμ, and the tau neutrino ντ.
See also solar neutrino problem, particle physics.