Difference: GlobalParticleIDSoftware (6 vs. 7)

Revision 72012-05-15 - MarcoCattaneo

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META TOPICPARENT name="GlobalParticleID"

Global Particle ID Software in LHCb

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CALO

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* To Be Filled *
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See Calorimeter Objects Tools Group documentation
 

Particles and ProtoParticles

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  During processing in DaVinci, when the DSTs are read back in for physics analysis, one of the first steps that is need is to produce Particle candidates from the ProtoParticles. Each ProtoParticle can be made into zero, one or many ProtoParticles (with different PID types) depending on the PID information stored in the ProtoParticle and the PID selection cuts that are applied. This step is gnereally referred to as the 'ParticleMaker' step. For charged ProtoParticles, the CombinedParticleMaker is generally used, whilst for neutrals there are a selection of possible Particle Makers.
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Gobal Particle ID

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Global Particle ID

  One task of the Global PID group is to study how best to merge all the sources of PID information (RICH, CALO, MUON etc.) to provide the best overall particle ID estimators.
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Combined PID Tuning

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Tuning of the combined PID is an ongoing effort. To aid this an algorithm has been written which dumps the PID information in the charged ProtoParticles, together with some useful tracking variables and the true MC type, to an ntuple. The algorithm is available in the Rec/GlobalReco package (available in the default DaVinci job) and is called ProtoParticleTupleAlg.
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Tuning of the combined PID is an ongoing effort. To aid this an algorithm has been written which dumps the PID information in the charged ProtoParticles, together with some useful tracking variables and the true MC type, to an ntuple. The algorithm is available in the Rec/GlobalReco package (available in the default DaVinci job) and is called ChargedProtoParticleTupleAlg.
  In the fullness of time, details on the PID performance and tunings will be posted here.


ChrisRJones - 17 Nov 2006 \ No newline at end of file
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MarcoCattaneo - 15-May-2012
 
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