[Rivet] ATLAS_2012_I1083318 analysis: W + jets

[Christian Gütschow]

Dear Rivet authors,

good news and bad news, good news first:

The analysis ATLAS_2012_I1083318 for the W + jets measurement is currently
marked as UNVALIDATED in your repository. I understand there were some
problems in some bins (e.g. the last bin in d07-x01-y01).

I've run this analysis on the Sherpa sample (normalised to the quoted NNLO
cross section) used in the corresponding paper using the latest Rivet
version and do not see any such discrepancies in the plots:

http://cgutscho.web.cern.ch/cgutscho/ATLAS_2012_I1083318/

As the routine correctly reproduces the results presented in the paper, I
would ask you to mark it now as VALIDATED (modified info file attached if
that helps).

Now the bad news: The yoda file for this analysis has a bug in that the
d25-x01-y02 data are a copy of the d25-x01-y01 data. This is the
dPhi(jet1,jet2) plot in the paper. The y02 histogram is for a lower minimum
jet pT cut and should have a higher cross section. I've fixed the yoda file
(also attached) by replacing the values for d25-x01-y02 with the correct
values (taken from HepData) and would like to ask you to replace this file.

(Note that the plots shown under the link above already use the corrected
yoda file.)

Many thanks,
Chris

-- 

 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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