[Rivet] WFinder

[Chris Pollard]

Hi David,

I'm tempted to deprecate WFinder immediately, leave it as is for one
> more release, but mark all analyses using it as UNVALIDATED.


> There are also other analyses that explicitly count neutrinos without
> using WFinder. Should those be UNVALIDATED, too?
>

I'm not sure this is the correct thing to do. If the experiments unfolded
to neutrino four momenta instead of truth MET, that doesn't make the
measurement wrong. It just makes it less portable and useful. We can't
change this now---the data are only useable when compared to this truth
definition.

My opinion is that we should mark the WFinder as deprecated now and be
prepared to manually rewrite analyses that unfold to the neutrino without
the WFinder. Those that unfold to the truth MET should still work, though.

Chris
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