[Rivet] ATLAS analysis to be included into Rivet

[Hendrik Hoeth]

Any opinions? This affects 14 out of 27 histograms. I really don't feel
comfortable taking the analysis as it is, but I also don't feel like
taking the heat on this list after rejecting the analysis (hey, this one
doesn't even crash! I can't even imaging how strong a fire protection
I'd need!) -- been there, done that way too often. So what do you guys
think?

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

> On 04/12/2013 11:41 AM, Hendrik Hoeth wrote:
> >Hi Roman, hi Kiran,
> >
> >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 tested this only with unweighted events (Herwig++ & Pythia6) and
> compared to the results in the paper (there are no plots with MC
> having weighted events, so we would not be able to validate the code
> on weighted events anyway).
> 
> I'm not sure what is the preference here, but it seems to me that
> including the weights would require quite some changes to the code
> (I'm not the author of the analysis who wrote the analyzing part of
> the code and so it may take some time to do it).