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Joy,...Thanks. I think there are several experiments that has bounds for the neutrino mass - but those bounds (with error bars) don't exclude zero. Fixated ideas are hard to change - as you know.

[quote="lcwelch"]Has any experiment been done that measures the neutrino mass directly? That the neutrinos oscillate in flavor seems indisputable and from that it is concluded that neutrinos must have mass and that gets widely reported without any evidence except the oscillations. What if,....[/quote]
Check out beta decay experiments. If I recall correctly, they have put some bounds on neutrino masses. Unfortunately I don't know of any specific reference.

Has any experiment been done that measures the neutrino mass directly? That the neutrinos oscillate in flavor seems indisputable and from that it is concluded that neutrinos must have mass and that gets widely reported without any evidence except the oscillations. What if,....