HCAL/JET/MET ntuples

1
Title

• HCAL/JET/MET ntuples
• ORCA/JetMetAnalysis
• Pal Hidas
• FNAL Batavia / RMKI Budapest

2
Functionality

• iteration through various ORCA subsystems
• reshaping of ORCA objects into unified shape
  (JetMetParticle)
• general C analysis framework for the
  JET/MET/HCAL group ( or beyond )
• simplified final user analysis in C (
  developing)
• data production for non C users
• PAW ntuples ( has limits )
• Root, etc. ( to be discussed )
• http//home.fnal.gov/sceno/jpg/ntuple_maker/Ntupl
  es.html

3
Packages

• JetMetCollection - collects information from ORCA
• JetMetPackage - the main analysis package
• JetMetUtilities - output ( ntuples, histos,
  printings )
• JetMetGlobal - global (event) classes (MET, etc.)
• HighLevelTauAnalysis - stuff of public interest
  from Sasha Nikitenko ( e.g. I stole the core of
  JetMetParticle from his My_Jet class )

4
JetMetCollection

• ORCA subsystems or packages have their own
  classes in JetMetAnalysis/JetMetCollection
• GeneratorInterface, Calorimetry, JetFinders,
  L1CaloTrigger
• ElectronPhoton - empty iteration for the moment
• Muon, Tracker - planned
• To learn about ORCA it is a good starting point
• Fill information into classes of JetMetPackage
  and JetMetGlobal, i.e. into
• JetMetParticle - for generated particles, jets,
  tracks(planned), em clusters(planned)
• SimpleMET - met (including set) instances
  calculated with various methods (generated,
  calorimetry, jets, muons, etc.)
• SpheriT, FoxWolframT - 2D (transverse) physics
  quantities for optional use

5
JetMetParticle

• unified particle definition for particles, jets,
  clusters, tracks, vertices, ...
• kinematical information ( E, Et, p, pt, px, py,
  pz, m, mt, ...)
• dynamical information ( charge - might be
  forgotten )
• pointers to mother and daughter particles ( from
  Pythia)
• begin and end vertex information ( using vertex,
  mother, daughter information )
• detector information ( EM, hadronic part of
  energy, also in cones)
• result of matching ( genrec, jetparticle, b,
  tau tagging )
• energy correction, calibration ( very preliminary
  )
• some members are not yet filled for some types
• objects created by the JetMetAnalysis class,
  content filled by ORCA subsystem classes

6
JetMetPackage

• The main analysis package
• directs collecting of ORCA information invoking
  JetMetCollection
• adds result of tagging matching algorithms to
  JetMetParticle objects
• fills the ntuple invoking the functions of
  JetMetUtilities/JetMetHistos
• permits of final user analysis and event
  selection via a user routine ( coming soon ) and
  selection tags
• this will be a good point to do analysis in C

7
Standard Ntuple

• PAW has limit of 50000 words (200 kByte) per
  event
• GENERAL - run/event number, version, pt_hat
• GENPART - kinematics, pointers to jets,
  daughters, vertices
• GENVERT - 4 coordinates, pointer to GENPART
• GENJET5 - kinematics, tau B tags, pointer to
  rec jets (cone0.5)
• GENJET7 - the same with cone size 0.7
• GENMET - missing Et from all gen, calo only and
  calomuon
• TOWERS - kinematics, EMHAD part, pointer to jets
• EMCLUS - isolated EM cluseters ( kinematics
  shape )
• JETS5 - kinem., EM part in cones, B tau EM
  likelin. (cone0.5)
• JETS7 - the same with cone size 0.7
• MET - reconstructed missing Et, similar to GENMET
• L1JETS - L1 trigger objects ( calo for the moment
  )
• L1MET - L1 mising Et ( calo for the moment )

8
Optional Ntuple

• PAW has limit of 50000 words (200 kByte) per
  event
• SPHERI - 2 dim sphericity tensor
• FOXWOLFR - 2 dim Fox-Wolfram momenta
• TRIGPRIM - calorimeter trigger primitives
• DIGIS - calorimeter rechits ( huge, for single
  particle only )
• AVEDIGI - some average quantities of digis
• you can cook your own ntuple setting runtime
  options in the run_db.csh script

9
Availability

• For local access
• CERN cms(lx).cern.ch
• FNAL wonder.fnal.gov, cmsun1.fnal.gov
• Check web for details
• http//home.fnal.gov/sceno/jpg/ntuple_maker/Ntupl
  es.html