[Rivet] ATLAS analysis to be included into Rivet

[Hendrik Hoeth]

Hi Roman, hi Kiran,

Thus spake Roman Lysak (lysak at fzu.cz):

> >I'm having a brief look at the code right now. Have you tested it with
> >weighted events? You do fill a weight vector _vecWeight, but never use
> >it. The regression seems to assume equal weights for all events. Is that
> >correct?
> That is correct.
> 
> The azimuthal part of the analysis includes the weights.
> The fwd-bkwd part of the analysis does not include the weights.

We've discussed this a bit, but we are very hesitant to put the analysis
into Rivet as it is. Weighted events get more and more common, and there
are plenty use cases for them (e.g. tuning an NLO generator). So at very
least we would put a mechanism in place such that weighted events would
throw an exception -- which of course would render that part of the
analysis useless for weighted runs.

Therefore we would very much prefer a solution where the analysis has
proper support for weights. How much effort do you think that would be?

Cheers,

   Hendrik

-- 
If your dreams don't scare you, then you are not dreaming big enough.