[Rivet] units in Rivet

Andy Buckley andy.buckley at ed.ac.uk
Fri Aug 17 14:40:31 BST 2012


Hi Hannes,

The HepMC units debacle continues! Are you reading the exact same HepMC
events into Rivet on both machines? This would eliminate one source of
error: dump the PYTHIA events to a file, and check what the units and
beam energy values are in that file, then try reading the same file into
Rivet on both machines. If there is a problem, then it sounds like we
need to fix something... or HepMC does.

What HepMC, Rivet, etc. versions are you using?

Cheers,
Andy


On 17/08/12 14:33, Hannes Jung wrote:
> Dear developers
> 
> I am stuck at the moment with a strange problem:
> 
> I have compiled Rivet on different machines from scratch and run it on a
> standalone version of PYTHIA (not in AGILE).
> On one machine the units for energy are in GeV and on the other they are
> in TeV, although I have explicitly set it to GeV in the hepmc configure.
> Even if I force the unit GeV in Rivet, for example by using sqrtS()/GeV,
> on machine it is in TeV and on the other in GeV.
> 
> I am lost there...
> 
> Any idea what I could check, where things could go wrong ? 
> 
> Thanks a lot
> 
> Cheers
> 
> Hannes 
> 
> 
> ***********************************************************************
> Hannes Jung 
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> DESY, CMS 01B/02.213
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> 
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-- 
Dr Andy Buckley, SUPA Advanced Research Fellow
Particle Physics Expt Group, University of Edinburgh

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