[Rivet] bug in ATLAS_2014_I1325553 (inclusive jets)

Christian Gütschow chris.g at cern.ch
Thu May 21 18:44:25 BST 2015


Dear Rivet authors,

it looks like a bug has been introduced in the current trunk version of the
ATLAS inclusive jets measurement (the version from the last release is
fine). Specifically, the normalisation factor in the finalise routine has
been modified:

https://rivet.hepforge.org/trac/browser/src/Analyses/ATLAS_2014_I1325553.cc#L83

to include an additional factor of 0.5 -- apparently to fix an issue with
the normalisation.

There should be no such factor as absolute rapidity has been used
consistently throughout the analysis and such a factor is only really
necessary if absolute and signed rapidities are being mixed (axis label vs
cross section differential).

Note that the original version (without 0.5) has been validated and no
issues with the normalisation have been observed, so I would recommend to
unfix this again. :-)


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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