Hee analysis at 189 GeV - an update
R.C . / F.F./R.M./P.M. - 8/2/99
Based on 98C2, old optimisation
New features:
-
bug correction
-
use of global b-tagging (second variable for 2D input)
-
new 5C fit strategy (first try peak Z mass, if fails use
mass distr.)
Data-MC comparison
at preselction and after elid.: some discrepancy at presel.,
low statistics at el. id.
|
data |
Tot. |
q qbar |
l+ l- |
WWEX |
eeqq |
llqq |
gamma gamma |
Pres. |
1359. |
1126.42,± 7.15 |
838.18 |
9.73 |
213.75 |
21.21 |
3.48 |
40.06 |
El. id. |
181. |
144.93± 2.90 |
68.68 |
4.93 |
46.77 |
16.18 |
0.64 |
7.72 |
El.en.. |
78. |
52.84± 1.80 |
15.45 |
4.28 |
16.82 |
13.75 |
0.28 |
2.25 |
Fit.prob |
18. |
15.03± 0.79 |
3.72 |
0.15 |
2.73 |
8.13 |
0.09 |
0.22 |
Isol.. |
7. |
9.45± 0.62 |
0.66 |
0.15 |
0.70 |
7.66 |
0.07 |
0.22 |
Mass. |
4. |
7.10± 0.50 |
0.46 |
0.00 |
0.57 |
5.99 |
0.07 |
0.00 |
B tag. |
2. |
2.15± 0.28 |
0.14 |
0.00 |
0.19 |
1.80 |
0.02 |
0.00 |
Loose btag cut at -1.8; focus on 2D analysis
With the -1.8 btag cut 2 events survive
85393/5178 (cut by btag in previous analysis)
85688/231
(lost for bad elec. energy determination in previous analysis)
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