[Rivet] bug in ATLAS_2014_I1325553 (inclusive jets)

[Christian Gütschow]

>
> I think this is a misunderstanding -- of course the scaling by
> crossSection/sumOfWeights is implemented fully in the analysis in the
> end. Christian was back then just using a manual ":Scale=..." on the
> command line to implement this factor because he hadn't yet realized
> that <rant>the yodamerge script needs the obvious --assume-normalized
> option (amongst the Sherpa team commonly referred to as the
> "assume-normalized trap") to function correctly.</rant>


That's exactly what happened... Sorry for not being clearer on this!

Cheers,
Chris

On 22 May 2015 at 09:21, Frank Siegert <frank.siegert at cern.ch> wrote:

> Hi David,
>
> I think this is a misunderstanding -- of course the scaling by
> crossSection/sumOfWeights is implemented fully in the analysis in the
> end. Christian was back then just using a manual ":Scale=..." on the
> command line to implement this factor because he hadn't yet realized
> that <rant>the yodamerge script needs the obvious --assume-normalized
> option (amongst the Sherpa team commonly referred to as the
> "assume-normalized trap") to function correctly.</rant>
>
> Cheers,
> Frank
>
>
> On 22 May 2015 at 09:49, David Grellscheid
> <david.grellscheid at durham.ac.uk> wrote:
> >
> >>> AMI xsec = 2.9675E+07 * 1000.
> >>> SumOfWeights = 1.5358320748e+19
> >>> --> scale factor = 1.9321773836416558e-09
> >>>
> >>> which I calculated manually at the time, without using the finalise
> >>> method.
> >>>
> >> That makes sense.
> >
> > I disagree. If scale factors are needed to validate the Rivet analysis,
> > they need to be encoded in the analysis itself. Otherwise we're losing
> > reproducibility, which is one of the main points of coding Rivet
> > analyses in the first place.
> >
> > See you,
> >
> >   David
> > _______________________________________________
> > Rivet mailing list
> > Rivet at projects.hepforge.org
> > https://www.hepforge.org/lists/listinfo/rivet
>



-- 

 Dr. Christian Gütschow

 TU Dresden
 Institut für Kern- und Teilchenphysik
 Zellescher Weg 19
 01069 Dresden

 > E17, Andreas-Schubert-Bau
 > chris.g at cern.ch
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