Jets and MissingET in the Atlantis Event Display

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Jets and Missing-ET in the Atlantis Event Display

• Qiang Lu, Juergen Thomas, Peter Watkins
  (Birmingham)
• Hans Drevermann (CERN)
• Andrew Haas (Columbia)
• Eric Jansen, Pieter Klok, Charles Timmermans
  (Nijmegen)
• Simon Dean, Nikos Konstantinidis, Zdenek Maxa
  (UCL)

Jet/Tau/ETMiss Group MeetingParis SW Week, 8 Dec
05
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Outline

• Producing JiveXML output from Athena and
  starting up Atlantis
• Display of Jets in various projections. Matching
  with Calo data
• Display of Missing-ET
• Upcoming developments - AOD objects including
  taus

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Basics (1) Running JiveXML

• In default mode, Athena package JiveXML will dump
  xml format output file, to be read back into
  Atlantis (a Java standalone application)
• Also possible to run over a large number of
  events and only display (produce xml files for) a
  few of them (JiveXML is now an AlgTool)
• Default mode Switch flag doJiveXMLTrue in
  RecExCommon/myTopOptions.py
• Details on http//www.hep.ucl.ac.uk/atlas/JiveXML
  .shtmlesp. for 10.0.x, it is recommended to
  check-out JiveXML-00-04-00 before running
  RecExCommon. Not needed in 11.0.x
• For general help, and suggestions, please
  contact
• atlantis.support_at_cern.ch

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Basics (2) Atlantis (Java)

• Website has plenty of documentation tutorials
  http//cern.ch/atlantis
• The latest Atlantis version is now available from
  the Offline releases (package graphics/AtlantisJav
  a)
• cmt co graphics/AtlantisJava
• cd AtlantisJava-/cmt
• cmt config
• source setup.sh
• gmake
• atlantis
• Alias atlantis available after setting up your
  athena environment (Alternative reduced options
  and functionality atlantis_beginner)
• Running under Windows / Mac as a java application
  works (may require installing Java 1.5 SDK)
  Copy directory AtlantisJava- from release,
  start atlantis.jar
• Note Although Atlantis is inside the release, it
  has no dependency on other packages. It is a Java
  standalone application. Inclusion into release
  only to simplify distribution and code
  management.

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Basics (3) Atlantis GUI
Menu bar Window Control Interaction
Control Parameter Groups Parameter Output Window
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Displays for Jets (1) XY projection

• XY projection. (Here WW into 4jets from DC2
  production)
• Fisheye zoom used
• By default, calorimeter cell energies are
  displayed as yellow areas
• Fraction of cell outline filled is proportional
  to energy, normalised to sum of energy in
  detector (em / had). Option normalise to
  overall energy.

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Displays for Jets (2) Color by Jet

• Option for Calorimeter cell entries in XY
  projection to Color by Index of Jet one colour
  for each jet index.
• Note All colours in Atlantis are freely
  adjustable ! Here, defaults are shown.

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Displays of Jets (3) Cuts

• For cuts on Jet ET, go to Parameter Group Cuts
  -gt Calo. For filtering low-ET jets
• For selection of data type Data

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Displays for Jets (4) fh projection

• Jets displayed in fh projection as circles
• Circle radius is proportional to ET (default)
• Optional switch for circle size by Energy
• Note Here, electromagnetic calo cells are green,
  hadronic are red. Option both yellow

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Displays for Jets (5) fh projection

• Now Color by index of Jet option selected.
  Matching of calo cells to jets can be clearly
  seen.
• Pick on jet circles, jet data is written out
• Jet 11 ET 162.177 GeV E 162.239 GeV ?
  .028 F 292.469

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Displays for Jets (6) rZ projection

• As in XY, Color by Index of Jet indicated jet
  in this projection

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Displays for Jets (7) Legoplot

• In Legoplot projection, Jets are displayed as
  shaded circles (grey by default) at the base
  plane. Default size 0.4 (adjustable)
• Calorimeter data represented by yellow towers
  (optionally different colour for had and em)
• Allows for visual matching of calorimeter data
  with reconstructed jets

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Displays for Jets (8) Legoplot

• Again, option Color by Index of Jet is useful
  for visual matching

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Displays for Missing-ET (1) fh Proj.

• Missing-ET is displayed in fh projection as one
  dashed (grey) circle
• By default, its MET_Final
• Switchable to CaloETMis and MuonETMis
• Pick on dashed circle, Missing-ET value is
  written out
• ETMis Sum-ET 635.664 GeV ET-Mis 45.480
  GeV ETx-Mis 44.488 GeV ETy-Mis -9.446 GeV F
  348.012

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Displays for Missing-ET (2) XY Proj.

• Missing-ET is displayed in XY projection as
  dashed line, continuing outside of the detector
• ETMis Sum-ET 398.299 GeV ET-Mis 33.627
  GeV ETx-Mis -29.062 GeV ETy-Mis -16.915 GeV
  F 210.201

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Displays for Missing-ET (3) Legoplot

• In Legoplot, Missing-ET is a (yellow) line at the
  back of the plot, with height proportional to
  Missing-ET value
• Value always written out with energy axis scale

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Future developments AOD data

• Taus are currently not displayed in Atlantis
  (only if they are inside the Jet container, but
  then just as jets).
• Currently work ongoing for displaying all AOD
  data (already in missing-ET, jets, to follow
  electron, muons, photons, taus, b-jets, etc.)
• First step include data in xml file already
  done
• Next step Display in fh projection as circles
  (other shapes/ colours) with same Pick
  functionality.
• Add cut options and extended data dumps (e.g. tau
  likelihoods). Add to Legoplot, and other
  projections
• Ready soon. A first impression is shown on the
  next slide. Your ideas about this are very much
  welcome !

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Taus

• Tau is a light blue circle
• Note All Taus in TauJetCollection are shown.
  Grey circles are KtTowerParticleJets. AOD Overlap
  still very visible. Reasonable cut needed.
• TauJet 2 ET 163.370 GeV E 267.832 GeV
  charge 0.0 num Tracks 3 ? -1.078 F
  148.016
• (Red Electrons, yellow Muons, dark blue B-Jets
  - Will likely be modified ! E.g. shapes)

Not available currently.For illustration only.
Likely to be modified.
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Summary

• Jets can be inspected in the Atlantis Event
  Display in many projections, shown as circles or
  by colouring calorimeter cells, cuts can be
  applied
• Missing-ET is also displayed in many projections.
  Switchable to Muon/Calo-only values
• Development for displaying more AOD contents,
  including taus, is on the way
• Up-to-date Atlantis is now inside releases
• Also new Use of interactive Athena to re-run
  secondary vertexing (see Atlantis talk in PAT
  meeting yesterday)