Difference: JetFlavourTagging (7 vs. 8)

Revision 82013-07-05 - DanProtopopescu

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ZZ Fusion Analysis

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  The neural nets are saved as XML files in nnets/ and will be used for flavour tagging (next step). No slcio output is written at this time.
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Purity and Efficiency Studies

To determine the optimal cut for our b-tagging, a purity vs. efficiency study was performed.

 

Flavour Tagging

Now are ready to employ the FlavourTag processor, which will do flavour tagging using the neural nets trained in the previous step. Our steering file contains the following processors:

  <processor name="MyFlavourTag"/>
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The ZZfusion processor is used in our analysis.
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Purity and Efficiency Studies

To determine the optimal cut for our b-tagging, a purity vs. efficiency study was performed. One can use the MakePurityVsEfficiencyRootPlot.C macro provided by the LCFIVertex package. Note that LCFI must be compiled with ROOT if one wants .root output from PlotProcessor (instead of .txt). For this, add as usual

FIND_PACKAGE( ROOT REQUIRED )
FOREACH( pkg ROOT ) 
 IF( ${pkg}_FOUND )
  INCLUDE_DIRECTORIES( ${${pkg}_INCLUDE_DIRS} )
  ADD_DEFINITIONS( ${${pkg}_DEFINITIONS} )
 ENDIF()
ENDFOREACH()
to the LCFIVertex/CMakeLists.txt file, source the root environment, then run cmake and make install. We also had to provide MyPlot with the actual name of the TrueJetFlavourCollection:
<parameter name="TrueJetFlavourCollection" type="string">TrueJetFlavour_4Jets </parameter>
Customise the MakePurityVsEfficiencyRootPlot.C macro and run it to produce the purity vs. efficiency plots.
 

Acceptance Studies

 
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