# Presentation: 695346

## Validation of the 6.1 high pt MUON datasample ***Stntuple***A.Canepa

- 8/01/04

## Datasets

- 6.1 Data	bexo2h	Stntuple 6.1.2 dev 243	L = 190.9 pb-1	Good Run List v9 (Muon-Electron) 5.3 Data	sewkbd	Stntuple 5.3.3 dev 242	L = 346 pb-1	Good Run List v7 (Muon-Electron)

- 8/01/04

## Event features

- Compare 5.3 and 6.1 data
- In events which contain _at least 2 reconstructed muons_
- We require at least one _high pt ID stub muon_

- 5.3 DATA Run Range [141544;186598]
- 6.1 DATA Run Range [195804;201349]

- 8/01/04

## Muon selection

-  High pt muon	BC pt > 20 GeV	loose track requirement	ID selection criteria CDF 7367		2) Low pt muon	BC pt > 5 GeV	loose track requirement	ID selection criteria CDF 71973) CMIO muon	BC pt > 10 GeV	tight track requirement	not fiducial to CMUP and not fiducial to CMX	other ID criteria as for stub muons	ID selection criteria CDF 7367

- 8/01/04

## Muon matching variables

- Normalized to the number of events

- New Data, smaller 2 ?

- 8/01/04

## Muon calorimeter variables

- From now, select  _Z events_
- opposite sign ID muons with invariant mass in [76;106] GeV
*Normalized to luminosity*

- 8/01/04

## Muon tracking variables (I)

- Same behavior with Loose Tracking
- Forward CMIO muons need understanding ?

- Stub muons ONLY

- 2nd muon CMIO only

- 8/01/04

## Muon tracking variables (II)

- 8/01/04

## Muon Tracking Variables (III)

- See improvement we expect

- 8/01/04

## Event kinematics

- Invariant mass of OS ID muons

- MET corrected for muons and jets

- 8/01/04

## Run dependence

- 6.1. Data

- 6.1. Data

- 5.3 Data

- 5.3 Data

- Yield

- of the mass

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## Event counting

| Control Region | 5.3 Data
scaled to 6.1 Data | 6.1 Data |
| --- | --- | --- |
| In Z mass | 4999.3 (9061) | 4902 |
| In Z mass & MET > 15GeV* | 112.5 (204) | 133 |
|  |  |  |
| Out Z mass | 987.0 (1789) | 949 |
| Out Z & MET > 15GeV*  | 52.4 (95) | 48 |

- 	_We require:_
- 	at least 2 reconstructed muons
- 	at least 1 high pt stub muon (CMUP or CMX)
- 	cosmic rejection
- 	clean up cut: -2 < φmet- < 2 deg
- 	in the Z mass window (76 < M < 106 GeV) 	outside the Z mass window (15 < M > 76 GeV & M > 106 GeV )

- At most 2 jets with L5
- Et > 20 GeV in the event

- Physics region crucial for SUSY trilepton analysis

- 8/01/04

## Summary

-  We compared 5.3 and 6.1 data using Stntuple high pt muon dataset
-  Looked at the identification variables needed to ID muon
-  Found agreement
-  we do not expect change in the value of the ID efficiency
-  Need to understand behavior of CMIO forward muons

- 8/01/04

## Back up Slides

- 8/01/04

## Subsample of events

- Events with one tight trigger muon (CMUP or CMX) and one additional muon which can only be a CMIO

- Large binning

- 8/01/04

## Chi2

- 8/01/04

## Good Run List

- GRL v9 Good Muon and Good Electron – no Silicon
- _Commented out:_
- 150824
- 155389
- 162393
- 164844
- 165088
- 167444
- 179314
- 190000 to 195408
- 195678
- 195719
- 196163
- 196229
- 196440
- 196737
- 199189
- 20026

- 8/01/04

## Muon ID

**HIGH pt**
- CMU and CMP or CMX stub
- DX 3,5,6 for CMU, CMP, CMX
- Fiducial in CMU and CMP or CMX
- BC pt > 20 GeV
- Em E <2 HeV
- Had E < 8 GeV
- COT Ax Segm (5) > 2
- COT St Segm (5) > 1
- Fractional iso < 0.1
- Z0 < 60 cm
- D0 < 0.2 or 0.02 is no Si/Si Hits

**Low pt [5;20] GeV**
- Same as for the high pt except:
- DX _or Chi2 < 9_ applied for the muon matching
- Had E < 3.5 + pt/8 GeV

**CMIO**
- Same as for the stub muons except:
-  BC pt > 10 GeV
- Stubless
- Not Fiducial in CMUP and not Fiducial in CMX
- COT Ax Segm (5) > 2
- _COT St Segm (5) > 2_

- 8/01/04