Muon reconstruction in release 14.1.0.1
D. Adams
April 2008
Release 14.1.0.1 is for validation. Production is planned in 14.2.0.1.
For other releases, see the complete list of results.
Issues in 14.1.0
1. Hole counts are absent for muid and staco combined.
Hole counting is not enabled in 14.0.X reconstruction.
2. Muid combined fit chi-square does not include the inner track. Staco
includes inner, outer and match.
Users should add Muid inner and combined chi-squares (and DOF's) to get
comparable values.
3. MuGirl crashes cause it to be disabled for standard production.
Fixed in 14.0.0.2.
4. CaloTag efficiency remains low with high fake rate.
Fakes can be reduced by requiring pixel/SCT hits or turning off
backtracking.
Fixed in 14.2.0.1.
5. CaloLR continues to have low efficiency.
CaloLR is not run to find muons in 14.0.X. Likelihoods are added to muons found with
other algorithms.
Fixed in 14.2.0.1.
6. Moore/Muid energy loss does not use calorimeter information if trigger is enabled.
Fixed in 14.0.0.2.
7. Calorimeter-tagged muons all have energy loss set to zero.
Same in 14.0.0.2.
8. Reco 14.1.0.1 from bytestream produced with 13.0.40.5 has inefficiencies.
Muon bug report 36729.
D. Adams talk at May 23 physics validation.
9. MuGirl has low efficiency for eta>2.0 and eta near 1.2.
Problem also affects earlier releases (13.0.40, 14.0.0)
No problems for eta<0.
Fix submitted 02jun for release 14.2.0.
Fixed in 14.2.0.1.
Graphical summaries
T1 history
T1 history with MuGirl on
R12/R13/14 history and geometry
Fullsim/Atlfast comparison
Higgs with pileup
dladams@bnl.gov