# Presentation: 684861

## Update on trilepton

- DATASETS
- Bhmu0d L=346 pb-1 GEN 5
- Bhmu0h L=399 pb-1 GEN 6
-  BACKGROUNDS
- DIMUON REGIONS
- Gen 5 MC (5.3.4) for all major background
- Cross check t-tbar and WW contribution against 6.1.3 MC; if needed, use in trilepton region (top mass = 175 GeV; large statistics)
- TRILEPTON REGIONS
- Gen 5 MC (5.3.4) for all backgrounds
- New DY Z/* with ISR/FSR
- Just finished stripping, so results refer to Pythia Z/* with FSR only
- FAKE
- Beate calculated the new fake rate for the leptons (not implemented yet)

- 8/01/04

## Lepton ID

- HIGH pt scale factors and trigger efficiencies
- High pt group blessed the results
- Else calculated the sf for low pt muons for GEN5 data and GEN 5 MC including the isolation efficiency into the ID efficiency to be consistent with high pt group
- Low pt muon sf for GEN6 data and GEN5 MC on going
- As for now using the same scale factor as for GEN 5

- CHANGE TO THE ID requirement
- CMU muon x < 7 cm (from <3 cm)
- Add 2 requirement to any muon (not for CMIO below 20 GeV)
- Add tight d0 cut on any muon (not for CMIO below 20 GeV)
- Add tight d0 cut on electron to reject conversions
- Loosen the conversion removal cuts
- For the CMIO, want to change the definition to avoid discontinuity: add tight d0 cut and 2 requirement also to CMIO below 20 GeV.

- 8/01/04

## Conversion scale factor

- CDF note released last week (CDF8073)
- Better understanding of the first bin in the scale factor as a function of the seed electron Et (changed datasample, modified the background subtraction, revisited systematic uncertainties)
- It has been revised ever since (not uploaded as CDF note yet)

- _Implementation_
- Select events with simulated photon
- Apply conversion removal algorithm to any seed electron with partner track pt > 0.7 GeV
- If the electron passed the filter, the event is scaled up

- 8/01/04

## Control Regions (CR)

**Invariant Mass of OS muons M******

**MET**

**  ****15 ****	****	****       76****	****     106 **

**  ****10    15****	**

**nJets < 2**
**nJets > 1**

**G**
**H**

**I**
**J**

**A**
**A2**

**E**
**F**

**A**
**A2**

**G**
**H**

- 8/01/04

## GEN5 Dimuon CR

| CR | DiBoson | t-tbar | Fake (SS) | DY
(no low mass) | TOT  | DATA |
| --- | --- | --- | --- | --- | --- | --- |
| A | 4.90.2 | 0.980.04 | 4.8 | 652 | 762 | 90 |
| G | 0.550.06 | 0.020.001 | 0 | 12138 | 12148 | 1293 |
| I | 0.680.04 | 0.0070.003 | 0 | 765420 | 765520 | 7673 |
| E | 1.60.1 | 0.270.02 | 0 | 1753 | 1768 | 175 |
| A2 | 0.090.03 | 3.40.08 | 0 | 3.30.4 | 6.70.4 | 11 |
| F | 0.070.02 | 0.940.04 | 0 | 12.50.8 | 13.60.8 | 18 |
| H | 0.002
0.001 | 0.070.01 | 0 | 10.30.7 | 10.40.7 | 20 |
| J | 0.013
0.001 | 0.0080.004 | 0 | 742 | 742 | 66 |
| Z | 2.50.1 | 0.280.02 | 0 | 866421 | 866721 | 8627 |

- 8/01/04

## GEN6 Dimuon CR

| CR | DiBoson | t-tbar | Fake (SS) | DY
(no low mass) | TOT  | DATA |
| --- | --- | --- | --- | --- | --- | --- |
| A | 6.660.24 | 1.120.05 | 4.8 | 752 | 872 | 97 |
| G | 0.690.07 | 0.024
0.007 | 1.6 | 13819 | 13839 | 1320 |
| I | 0.860.05 | 0.0070.004 | 0 | 867922 | 868023 | 8218 |
| E | 3.560.12 | 0.310.03 | 0 | 1983 | 2023 | 227 |
| A2 | 0.120.03 | 3.830.09 | 1.6 | 3.70.4 | 9.30.4 | 16 |
| F | 0.100.03 | 1.070.05 | 0 | 14.20.9 | 15.40.9 | 20 |
| H | 0.004
0.001 | 0.080.01 | 0 | 11.80.8 | 11.90.8 | 20 |
| J | 0.019
0.004 | 0.0090.005 | 0 | 842 | 842 | 89 |
| Z | 4.90.1 | 0.310.03 | 0 | 982524 | 983024 | 9438 |

- 8/01/04

## Region G

**New data only**
- Fakes are not included in any plot

- 8/01/04

## Region Z

- Cross sections
- 1) CMUPCMUP σ=25215(sys)
- 2) CMXCMX σ=23614(sys)

- 8/01/04

## Outside the Z

*No low mass cut *

- Any dimuon event
- Will apply M > 15 GeV
- MC simulation for 15<M<20 GeV to be included
* *

- 8/01/04

## Jet outside the Z

*No low mass cut*
- No effect due to the chimney/crack
- Try to implement L1 JEC, same results

- 8/01/04

## High jet mult.regions

- F
- (in the Z, high met, high jet mult.)

- 8/01/04

## Control region A

- Mass for fake events
- M = 162 GeV
- M = 63 GeV
- M = 23 GeV

- Met for fake events
- Met = 35 GeV
- Met = 16 GeV
-  Met = 26 GeV

- Jet for fake events:
- 2 events, N = 0
- 1 event, N =1

- 8/01/04

## Gen5Trilepton CR

| CR | Susy | Diboson | t-tbar | Fake | DY | TOT | DATA |
| --- | --- | --- | --- | --- | --- | --- | --- |
| A | 0.700.03 | 0.1030.08 | 0.005
0.003 | 0.11 | 0.0550.03 | 0.290.03 | ??? |
| G | 0.0380.007 | 0.0280.003 | 0 | 0.18 | 1.440.17 | 1.650.17 | 2 |
| I | 0.0030.002 | 0.170.01 | 0 | 0.78 | 1.650.19 | 2.60.19 | 5 |
| E | 0.0280.006 | 0.600.02 | 0 | 0.25 | 0.270.07 | 1.110.07 | 1 |
| A2 | 0.0120.004 | 0.0020.001 | 0.007
0.004 | 0.02 | 0.020.02 | 0.050.02 | 0 |
| F | 0 | 0.0100.002 | 0.002
0.002 | 0.03 | 0 | 0.046
0.003 | 0 |
| H | 0 | 0.0005
0.0004 | 0 | 0.02 | 0.060.03 | 0.080.04 | 0 |
| J | 0 | 0.0020.002 | 0 | 0.11 | 0.040.03 | 0.160.03 | 1 |
| Z | 0.0310.006 | 0.850.02 | 0.0020.002 | 1.43 | 2.310.22 | 4.590.22 | 7 |

- Trilepton control regions need to be updated with the new fake rate and the new DY sample – temporary results from last Else’s talk (data are shown with the up to date selection)

- 8/01/04

## Gen6 Trilepton CR

| CR | Susy (a) | Diboson | t-tbar | Fake | DY | TOT | DATA |
| --- | --- | --- | --- | --- | --- | --- | --- |
| A | 0.800.04 | 0.1150.009 | 0.0060.003 | 0.14 | 0.060.03 | 0.320.35 | ??? |
| G | 0.0440.008 | 0.0030
0.004 | 0 | 0.17 | 1.60.2 | 1.80.2 | 2 |
| I | 0.0030.002 | 0.200.01 | 0 | 0.91 | 1.80.2 | 2.90.2 | 2 |
| E | 0.0310.006 | 0.670.02 | 0 | 0.41 | 0.290.08 | 1.370.08 | 0 |
| A2 | 0.0140.005 | 0.002
0.001 | 0.006
0.003 | 0.02 | 0.020.02 | 0.050.02 | 0 |
| F | 0 | 0.0120.003 | 0.002
0.002 | 0.07 | 0 | 0.085
0.004 | 0 |
| H | 0 | 0.0005
0.0005 |  | 0.01 | 0.060.04 | 0.080.04 | 0 |
| J | 0 | 0.0030.001 |  | 0.08 | 0.050.03 | 0.130.03 | 0 |
| Z | 0.0360.07 | 0.960.002 | 0.002
0.002 | 1.75 | 2.550.24 | 5.20.2 | 2 |

- Trilepton control regions need to be updated with the new fake rate and the new DY sample – temporary results from last Else’s talk (data are shown with the up to date selection)

- 8/01/04

## Sensitivity

| Selection | Susy | Diboson | t-tbar | DY | Fake  | TOT | S/√B |
| --- | --- | --- | --- | --- | --- | --- | --- |
| trilepton | 1.0 | 1.2 | 0.02 | 4.4 | 2.4 | 8.05 | 0.3 |
| Mass | 0.93 | 0.2 | 0.01 | 1.8 | 0.4 | 2.4 | 0.6 |
| Jet | 0.91 | 0.2 | 0.006 | 1.7 | 0.4 | 2.3 | 0.6 |
| MET | 0.80 | 0.1 | 0.006 | 0.06 | 0.14 | 0.3 | 1.5 |

- _N__ew data only_ , L = 399.5 pb-1
- Fakes: from Stntuple dataset bexo2h, old fake rate
- CMU dx = 3 cm for any muon in the event:

- Using the _new selection_ for the _total data available_ (346+399pb-1)
**SUSY expected signal =  1.6 ******** 0.07**

- 8/01/04

## GEN5 e analysis

| Region | Bkg | DATA |
| --- | --- | --- |
| A+E | 38 | 40 |
| G+I | 27 | 28 |
| A2+F | 5.3 | 5 |
| J+H | 0.3 | 0 |
| G+I (3l) | 2.1 | 2 |
| J+H (3l) | 0.0005 | 0 |

| Bkg | DATA |
| --- | --- |
| 23 | 24 |
| 15 | 21 |
| 2.2 | 1 |
| 0.3 | 1 |
| 1.6 | 0 |
| 0.001 | 0 |

- Central e

- Plug e

- 8/01/04

## GEN6 e analysis

| Region | Bkg | DATA |
| --- | --- | --- |
| A+E | 44 | 51 |
| G+I | 29 | 23 |
| A2+F | 6.3 | 2 |
| J+H | 0.3 | 0 |
| G+I (3l) | 2.8 | 1 |
| J+H (3l) | 0.01 | 0 |

| Bkg | DATA |
| --- | --- |
| 28 | 34 |
| 18 | 23 |
| 3.2 | 3 |
| 0.3 | 0 |
| 2.2 | 0 |
| 0.001 | 0 |

- Central e

- Plug e

- GEN6 e analysis

- 8/01/04

## Plan

- SCHEDULE
- Request un-blinding on Feb 16th
- DO we show separate Gen5 and Gen6 data?
- Pre-bless on Feb 24th
- Pre-bless the combined limit on March 1st
- Bless on March (presented at Moriond EWK)

- Steps
- Finalize ID cuts for CMIO
- Implement new fake rate in the trileptons CR
- Use the new Z/* sample in the same regions
- Calculate the major systematic uncertainties
*Would  like to understand better the high jet mult. regions even though they are not related to our signal (is this fake contribution?)*

- STATUS of ALL CHANNELS
- High pt electrons – request unblind next week – issues for the high jet mult regions in GEN6 data
- Low pt electrons – unblinded GEN6 data yesterday
- Low pt muons – unblinded GEN5 data yesterday (no events found)

- 8/01/04

## Slide 19

- 8/01/04

## CMX Geometry

- MINISKIRT

- MINISKIRT

- KEYSTONE

- 8/01/04

##  MC: 5.3 samples

-       zewk6m		Z				3M events
-       zewk8t          	Z     			10M
-       sexo8/9t           DY (low mass + conv) 	4 –10 M
-       hewk0x            	W  (Madgraph)                200k each
-       wexo0z             WZ/* (Beate’s)               120k
-       ttopel               178 GeV ttbar                   1M
-       wtop1w            WW                                 400k
-       dog10z             ZZ (Oscar’s)                     160k
- ”SUSY” results quoted are ”Anadi-point” values

- 8/01/04

- Blessed tight-tight

| CR | TOT | DATA |
| --- | --- | --- |
| A | 28
 3 | 33 |
| G | 522 
 14 | 538 |
| I | 2845
  33 | 2814 |
| E | 57 
 4 | 60 |
| A2 | 1.3 
 0.5 | 2 |
| F | 1.8 
 0.8 | 2 |
| H | 4.0 
 1.2 | 7 |
| J | 22
  3 | 20 |
| Z | 3178 
 35 | 3168 |

| CR | Susy (a) | TOT | DATA |
| --- | --- | --- | --- |
| A | 0.37 
0.03 | 0.09 
0.05 | 0 |
| G | 0.023
0.006 | 0.84
0.20 | 2 |
| I | 0
  0.003 | 0.96
0.20 | 0 |
| E | 0.011
0.04 | 0.43
0.70 | 0 |
| A2 | 0.001
0.001 | 0.005
0.70 | 0 |
| F | 0 
 0.003 | 0.01
0.70 | 0 |
| H | 0 
 0.003 | 0.01
0.70 | 0 |
| J | 0 
 0.003 | 0.02
0.70 | 1 |
| Z | 0.012
0.004 | 1.7
0.22 | 1 |

**2 muons**

**3 leptons**

- 8/01/04

## Z new data

- No smearing applied

- 8/01/04