[Rivet] WFinder Missing Et

[Andy Buckley]

Short answer: yes, and it'll be fixed in the next release. For now
making a cut on the constituent neutrino will be almost entirely
equivalent (assuming there's only one significant source of missing ET
in your events). Apologies for the bug!

Andy


On 12/02/15 20:45, Deepak Kar wrote:
> Hi James,
> 
> This thread may be of help:
> https://www.hepforge.org/lists-archive/rivet/2015-January/005373.html
> 
> Cheers,
> Deepak
> 
> On Thu, Feb 12, 2015 at 10:40 PM, James Henderson
> <James.Henderson at physics.ox.ac.uk> wrote:
>> Hello,
>>
>> I was implementing WFinder in my analysis using the afs setup at:
>> /afs/cern.ch/sw/lcg/external/MCGenerators_lcgcmt67b/rivet/2.2.0/x86_64-slc6-gcc48-opt/
>>
>> I see that the missing eT cut is not respected by wfinder in that the
>> constituentNeutrino eT is often well below the missing eT cut requested in
>> the wfinder constructor.
>> Looking at
>> /afs/cern.ch/sw/lcg/external/MCGenerators_lcgcmt67b/rivet/2.2.0/share/sources/src/Projections/WFinder.cc
>> (lines 125-131) I see the missingET cut is applied on the scalar sum of the
>> visible momentum in the event rather than on the missing momentum.
>>
>> Should this cut not be applied to the transverse magnitude of the vector sum
>> of the total event momentum rather than the scalar sum?
>>
>> Thanks,
>> Jim
>> _______________________________________________
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>> Rivet at projects.hepforge.org
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> 
> 
> 


-- 
Dr Andy Buckley, Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow / PH Dept, CERN