Top background

Top background: event count        
             
    MET < 40 GeV     No MET cut  
ST cut, GeV Total Outside [82-100] In [82-100] Total Outside [82-100] In [82-100]
0 1650 1380 270 5281 4473 808
100 1648 1378 270 5273 4465 808
125 1615 1345 270 5185 4380 805
150 1514 1259 255 4887 4118 769
175 1305 1082 223 4248 3595 653
200 1027 857 170 3358 2861 497
225 753 637 116 2432 2097 335
250 509 440 69 1663 1465 198
275 322 287 35 1082 971 111
300 215 193 22 704 631 73
325 136 123 13 443 403 40
350 90 84 6 288 268 20
375 56 51 5 186 171 15
400 34 31 3 120 110 10
             
Total in Top MC: 101339          
Branching ratio: 0.0685          
Top cross section: 5.5 +- 1.8 pb        
Ldt = 268982 pb^-1        
Acceptance cor. 1.2 +- 0.05        
Efficiency 0.73          
             
Top background: absolute number         Error: 35%  
             
    MET < 40 GeV     No MET cut  
ST cut, GeV Total Outside [82-100] In [82-100] Total Outside [82-100] In [82-100]
0 0.66 0.55 0.11 2.12 1.79 0.32
100 0.66 0.55 0.11 2.11 1.79 0.32
125 0.65 0.54 0.11 2.08 1.75 0.32
150 0.61 0.50 0.10 1.96 1.65 0.31
175 0.52 0.43 0.09 1.70 1.44 0.26
200 0.41 0.34 0.07 1.35 1.15 0.20
225 0.30 0.26 0.05 0.97 0.84 0.13
250 0.20 0.18 0.03 0.67 0.59 0.08
275 0.13 0.11 0.01 0.43 0.39 0.04
300 0.09 0.08 0.01 0.28 0.25 0.03
325 0.05 0.05 0.01 0.18 0.16 0.02
350 0.04 0.03 0.00 0.12 0.11 0.01
375 0.02 0.02 0.00 0.07 0.07 0.01
400 0.01 0.01 0.00 0.05 0.04 0.00

Last Update: 5/22/97

Name: Greg Landsberg

Email: Landsberg@fnald0.fnal.gov