Hee analysis status report
Genova team - 21/1/02




Final low mass treatment:
 

Old analysis Present analysis
Mjets > 20 GeV at preselection No such cut
-50 GeV<Mjets(4C fit) - Mee(4C fit)<100 GeV Mjets(4C fit) - Mee(4C fit)<100 GeV
Mjets(4C fit) + Mee(4C fit)  >150 GeV Mjets(4C) + Mee(4C)  >100 GeV if Mjets(5C) <60 GeV
Mjets(4C) + Mee(4C)  >150 GeV if Mjets(5C) >60 GeV

 

Effect on Hee samples: good efficiency from low masses (plot)
Tables:  204E  205E  207E  208E  207U
 
 

Data/MonteCarlo sequential cuts table:
MC samples at different energies/conditions summed up with luminosity weight
 

Cut  Data  Tot  q qbar  l+l-   CC 4f NC 4f  gam gam 
Presel 1284. 1293.13± 2.36 829.94 0.08 397.45 58.81 6.85
Strong.Id 193. 225.53± 0.91 81.96 0.00 109.89 30.22 03.47
El. ene. 86. 91.75± 0.46 24.23 0.00 43.74 23.08 0.69
Fit prob. 37. 34.48± 0.26 9.83 0.00 9.78 14.82 0.05
Jet Iso 18. 16.52± 0.12 1.36 0.00 1.71 13.44 0.02
Mass Sel 15. 14.18± 0.12 1.04 0.00 1.26 11.86 0.02
Btag>-1 2. 3.83± 0.04 0.24 0.00 0.09 3.49 0.00

 

Preselection plots
Input level plots
 
 


CANDIDATES

+-------+-------------+-------------+------------+--------------+--------------+
| Event |   Nrun      |   Ievt      |   Mjet     |   Btag       |   Ecm        | Mee
+-------+-------------+-------------+------------+--------------+--------------+
|     1 |  110078     |  1631       |  18.4861   | -2.9296      |  207.891     | 91.19
|     2 |  110167     |  11034      |  92.3045   | -1.18436     |  205.017     | 91.19
|     3 |  110537     |  7580       |  32.7783   | -2.7548      |  206.25      | 91.19
|     4 |  110925     |  1650       |  26.3743   | -2.97431     |  205.399     | 91.19
|     5 |  110971     |  15014      |  55.6466   | -3.00109     |  206.107     | 70.65
|     6 |  111651     |  7943       |  44.8609   |  6.15444     |  206.565     | 91.19 *
|     7 |  111851     |  1811       |  89.8544   | -2.34448     |  206.557     | 91.19
|     8 |  111886     |  551        |  110.123   | -3.00004     |  205.074     | 91.19
|     9 |  113145     |  1923       |  93.33     | -2.71976     |  206.602     | 91.19
|    10 |  113675     |  2812       |  101.387   | -2.55876     |  205.185     | 91.19
|    11 |  113734     |  5623       |  48.5962   | -2.9926      |  204.758     | 59.45
+-------+-------------+-------------+------------+--------------+--------------+
+-------+-------------+-------------+------------+--------------+--------------+
| Event |   Nrun      |   Ievt      |   Mjet     |   Btag       |   Ecm        |
+-------+-------------+-------------+------------+--------------+--------------+
|     1 |  115072     |  5758       |  86.0308   | -1.05841     |  206.557     | 91.19
|     2 |  115244     |  10493      |  98.7786   | -0.346611    |  206.57      | 70.65 *
|     3 |  116197     |  18399      |  17.9649   | -1.99928     |  206.65      | 105.15
|     4 |  117113     |  20046      |  40.276    | -1.24753     |  206.561     | 91.19
+-------+-------------+-------------+------------+--------------+--------------+
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

CONCLUSIONS: