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Adding LHE Plotter and using it in tests

Merged Adding LHE Plotter and using it in tests
zmarshal/athena:21.6_LHE_Plotter_Addition into 21.6
Merged Zach Marshall requested to merge zmarshal/athena:21.6_LHE_Plotter_Addition into 21.6
  1. Jan 30, 2020
    • Zach Marshall's avatar
      Adding LHE Plotter and using it in tests · 4d83e49d
      Zach Marshall authored 
      Adding a simple LHE plotter to EvgenProdTools. This plots some basic
quantities in an LHE file:

- Event weights
- PDG ID of the incoming partons (assuming the first two partons are
incoming)
- Energy of each of the incoming partons (assuming the first two partons
are incoming)
- pT of each of the hard scatter partons (assuming the second two
partons are hard scatter, e.g. ttbar or SUSY)
- pT of each additional emmission (assuming those are entries 5 and up)
- Multiplicity

This should be enough to watch our LHE files for major changes. At some
point the script can be extended to do some simple checks on the LHE
weights (number, consistency, etc). For now, we want to use them in the
MGC nightly tests.

Adding some lines to the MGC nightly tests to use the test script and
save the output histograms. Hopefully from here we're only a few steps
away from automatic comparisons.
      4d83e49d