[Rivet] Bug/change in RIVET IdentifiedFinalState()?

[David Grellscheid]

And some events, please?

Thanks,

  David


On 08/07/15 10:05, Marco Delmastro wrote:
> Hello,
> 
> You'll find the analysis attached here. As I mentioned, I'm using rivet 2.2.0 via the ATLAS Athena framework,
> 
> M.
> 
> 
> 
> 
> On 08 Jul 2015, at 11:02, David Grellscheid <david.grellscheid at durham.ac.uk> wrote:
> 
>> Hi Marco,
>>
>> can you please send a minimal analysis and a short HepMC file that shows
>> the problem? Also, which Rivet version are you using?
>>
>> Thanks,
>>
>>  David
>>
>>
>> On 08/07/15 09:27, Marco Delmastro wrote:
>>> Hello,
>>>
>>> Andy Buckley suggested that I report this bug (?) I encountered when using Rivet within the ATLAS Athena framework.
>>>
>>> I'm writing the RIVET routines for the ATLAS 8 TeV inclusive diphoton and diphoton + jet analyses. In the first tests I made, running on a Pythia diphoton samples, I noticed something strange: only photons with eta > 1 were used, and the initial pT selection was not applied. I tracked down the problem to this method:
>>>
>>> IdentifiedFinalState photonfs(Cuts::abseta < 2.37 && Cuts::pT > 30.*GeV); // 30 GeV cut on subleading photon
>>>
>>> Apparently the 30 GeV cut on the photon pT is not applied, and or some reason only objects with eta > 1 are kept. From some conversation on the ATLAS MC Generator mailing list, it seems that the problem might be related to the handling of the && operator. If I change the line to:
>>>
>>> IdentifiedFinalState photonfs(-2.37,2.37,30.*GeV); // etamin, etamax, ptmin
>>>
>>> everything seems to work fine. I'm using rivet 2.2.0 from Athena 19.2.1:
>>>
>>> [mdelmast at lxplus0157 Rivet]# which rivet
>>> /cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc47-opt/19.2.1/AtlasSimulation/19.2.1/InstallArea/share/bin/rivet
>>>
>>> [mdelmast at lxplus0157 Rivet]# rivet
>>> Rivet 2.2.0 running on machine lxplus0157.cern.ch (x86_64)
>>>
>>> Thanks for your help!
>>>
>>> Ciao, M.
>>>
>>>
>>>
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>>>
>