Overview of progress since Oxford Coll' meeting

1
Overview of progress since Oxford Coll. meeting

• a lot of progress on completing and finalising
  LCFI Vertex Package
• focus of work since last meeting was in the
  following four areas
• understanding the system test with SGV input
  with the aim to improve MARLIN performance
• to the level of performance achieved with SGV
  (flavour tag inputs, IP issues, see Bens talk)
• still ongoing, new comparison plot in
  preparation
• completing the interface to MarlinReco event
  reconstruction and porting to MarlinReco
• (e.g. different setup for compiling as with
  MARLIN, MC true jet flavour) -gt this and Bens
  talk
• finalising / debugging code and steering files
  for release
• preparation of system test with MarlinReco input
  (track cheaters)

2
PlotProcessor performance

• purity / efficiency obtained in PlotProcessor
  and from standalone program in good agreement
• after ensuring the same angular cuts were
  used (Mark)

3
Determination of MC-true jet flavour

• interface to MarlinReco implemented, tested in
  Marlin processor (Ben)
• SGV-algorithm implented in C and shown to
  agree for identical input, see plots (Erik)

• still to be done putting both together and
  ensuring that identical results are obtained for
• same input events (when MOKKA files available)

4
Preparation for system test with MarlinReco input

• will need to run simplified MarlinReco event
  reconstruction before running our code
• Ben put together steering file to do so
  straightforward, mainly fine
• except in contrast to earlier statements,
  track cheater does not put out covariance
  matrices
• request sent to Alexei Raspereza who promised to
  fix this in the 1st or 2nd week of February
• now have agreement that MOKKA files for system
  test will be processed on the GRID by DESY
• DESY expert in charge of this is Dennis Martsch
• modified SGV to put out StdHep binary files as
  input for those runs (Sonja)
• example file has been sent to DESY for checking
  file format etc.
• will clarify timescale for obtaining MOKKA files
  and further details tomorrow
• until we obtain MOKKA files and modified
  MarlinReco version work on finalising code
• and documentation