[Rivet] implementation of W/Z cross-section ratio analysis

[Andy Buckley]

Hi Roman, all,

Sorry for the delayed reply -- I marked this email as "new analysis from
ATLAS" and only just got around to reading it properly while I merge new
analyses into the code!

This is indeed an unusual situation but I think it's worth implementing
in the form that you say (with a big Todo: note in the .info file!),
until we have added some machinery which would allow a single analysis
to run over samples like this and do the run combination, division etc.
as required in the finalize step. Definitely worth doing while there are
still people who know the details of the analysis. This Rivet
infrastructure work has already begun, so it's not a crazy blue skies
aspiration, but something semi-concrete... and as you say until then we
can do the last bit manually!

There is a precedent for splitting single papers into multiple
per-channel Rivet analyses: just append something minimal & clear that
identifies the channel to the analysis class name, e.g.
ATLAS_2014_I123456_W, ATLAS_2014_I123456_Z

Cheers,
Andy


On 10/02/14 16:04, Roman Lysak wrote:
> 
>  Dear Rivet authors,
> 
> there is an ATLAS measurement of ratio of W/Z (+1jet) cross-sections, see:
> 
> http://inspirehep.net/record/924848
> 
> The same  measurement with much more data is also planned.
> We were thinking about implementing this analysis into Rivet. Clearly
> this would require some non-standard approach since one would have to
> run over both W and Z sample. However, I can imagine there could be two
> separate routines which people could run on two different samples
> (W,Z).  In the end, the ratio plots would be produced just by dividing
> the individual plots.
> 
> Any your comments/suggestions would be appreciated.
> 
> Thanks,
>   Roman
> 
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-- 
Dr Andy Buckley, Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow / PH Dept, CERN