Results for t00.80.00

D. Adams
15mar00 1520

Here we present results for t00.80.00. The most important change is the removal of a charge sign bias in the CFT.

Here are results for Pythia Z -> mu mu and Z -> e e with zero to six background events. These are our MC certification events.

 run bg  #ev  CPU  CLK  mem  swp tm  pe  pTt  # mc   eff misr fake  fcsq mcsq nclu
---- -- ---- ---- ----  ---  --- -- ---  --- -----  ---- ---- ----  ---- ---- ----
pzmm  0 1000    8    8  109  124  0   7  0.5  7714  .743 .074 .021  21.4 12.2 15.4
pzmm  1 1000   36   36  280  296  0  20  0.5 20151  .703 .112 .029  21.7 14.7 14.0
pzmm  2  819   90   90  469  485  0  44  0.5 30141  .700 .131 .037  21.4 15.1 13.5
pzmm  3  submitted 14mar 140
pzmm  4  500  359  361  673  692  1  63  0.5 29445  .694 .157 .045  22.2 16.0 13.3
pzmm  5  250  603  605  616  636  2  32  0.5 17177  .699 .177 .053  22.4 16.2 13.1
pzmm  6  submitted 09mar 2039

pzee  2 1000   90   90  506  522  0  35  0.5 33110  .693 .130 .035  21.6 15.5 13.5
pzee  3  500  192  193  480  496  0  31  0.5 23081  .698 .143 .042  22.0 15.7 13.9

pzmm  0                                 10.0  1704  .869 .018 .002  20.0  5.6 18.3
pzmm  1                                 10.0  1733  .833 .034 .005  21.2  5.5 18.2
pzmm  2                                 10.0  1667  .804 .052 .007  21.6  5.5 18.5
pzmm  4                                 10.0   947  .754 .076 .018  22.1  6.0 17.7
pzmm  5                                 10.0   498  .709 .108 .040  23.6  5.9 17.5

pzee  2                                 10.0  1764  .796 .132 .010  23.9  9.4 18.1
pzee  3                                 10.0   927  .771 .131 .014  23.2  9.4 17.3

The columns in these tables are defined here.

Here are plots showing the found (top) and lost (bottom) tracks in the z0-tan(lambda) plane.

The figures include curves showing the subdetector boundaries. The central horizontal band is the CFT acceptance. The thin bands above and below are the overlap region. The regions above the top V and below the bottom V are the SMT forward acceptance. There are also regions in the upper left and lower right between the CFT overlap and the SMT forward which are not covered. These are the "gaps".

pzmm + 0 bg  low pT  high pT
pzmm + 1 bg  low pT  high pT
pzmm + 2 bg  low pT  high pT
pzmm + 3 bg  low pT  high pT
pzmm + 4 bg  low pT  high pT
pzmm + 5 bg  low pT  high pT
pzmm + 6 bg  low pT  high pT

pzee + 2 bg  low pT  high pT
pzee + 3 bg  low pT  high pT

Here is the CPU time (sec/event) broken down by track-finding step as reported by the framework.

 run bg   cc   co    c   cs    f  csf  tup
 --- --  ---  ---  ---  ---  ---  ---  ---
pzmm  0    1    1    1    1    3    1    0
pzmm  1    7    2    2    3   14    3    0
pzmm  2   19    4    5    6   44    5    1
pzmm  4   88   10   11   15  209   12    2
pzmm  5  148   13   14   19  381   15    2
pzee  2   19    4    5    6   44    5    1
pzee  3   43    7    7   10  107    8    1

Here is the clock time (sec/event) broken down by track-finding step as reported by the framework.

 run bg   cc   co    c   cs    f  csf  tup
 --- --  ---  ---  ---  ---  ---  ---  ---
pzmm  0    1    1    1    1    3    1    0
pzmm  1    7    2    2    4   14    3    0
pzmm  2   20    4    5    6   44    5    1
pzmm  4   88   10   11   15  210   12    2
pzmm  5  149   13   14   19  383   15    2
pzee  2   19    4    5    6   44    5    1
pzee  3   43    7    7   10  108    8    1

Comments

Changes since the last posted results:

There has been a small decrease in the hi-pT efficiency.
There is a significant increase in the low-pT efficiency.
The # hits/tracks (and the fit chi-square) have increased.

The most serious remaining problems:

The central CFT efficiency drops as background events are added.
The misreconstructed fraction and the fakes increase significantly as backgound events are added. (This may be because the central CFT efficiency drops and the tracks are found in the overlap CFT).
Overlap tracking has been disabled because of the large CPU time required.
The fit quality (match chi-square) is not good at low pT.
There is a gap between the overlap and forward regions. Presumably this is responsible for the 5% inefficiency obsrved for the high pT tracks in the pzmm events.
The forward tracking time now dominates.

dladams@uta.edu