Muon reconstruction in release 13.0.20 and production cache 13.0.20.1

D. Adams
June 20, 2007

Release 13.0.20 is a reconstruction pre-production release.

For other releases, see the complete list of results.

Issues from 13.0.10

1. Hit counts are absent for muid and staco combined.
  • This was problem with muperf sum of inner and outer. Now fixed.
    2. Hole counts are absent for muid and staco combined.
    3. Staco combined fit quality now includes constributions from inner and outer tracks. Previously these were absent. Muid still excludes the inner track.
    4. Muonboy fit chi-square tail is still large. There is a slight improvement from 12.0.X. Moore is again much better.

    Issues for 13.0.20

    1. Calo muon container is present but has many fakes, 10/event in SU(3) and T1. The CaloLR likelihodd is always 0 and the truth isolation is missing.
  • These can be suppressed with cuts on isolation and pT.
    2. Endcap efficiency is low for data simulated with 13.0.20.
  • 29aug07 - Ahmimed reports that there is a problem with the TGC simulation.
    3. Truth isolation missing for truth muons.
    4. It has been reported that muons all have positive charge. Presumably this is in the charge() method--there is not problem with truth matching which is presumably based on track parameters.

    Results

    Efficiency and fakes are for pT>4 GeV/c, |eta|<2.8 and r0<2 cm.
    Cuts are very loose.

    All results

    Graphical summaries:
       Combining muons
       Zmumu history
       T1 history
       old T1 history
       old T1 history without seld001

    Other plots
       Calorimeter muons

    dladams@bnl.gov