Status of e presentation

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Title: Status of e

1
Status of eµ low-pT trilepton analysis

M.Rossi,G.Pauletta,M.Giordani
Udine University

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Since last time

Fixed bug in Larry Correction for muon pT
Following now Join Physics prescription
Larry Correction not applied at MC
eµ and µe channels separately
First look at fakes in the dilepton CRs

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Leptonfake Calculation

Using CEM8 and CMUP8 inclusive samples
Leptonfake selection requiring events with
real first lepton
CEM8 for eµ and CMUP8 for µe
fake lepton using Liverpool method
Should rescale for the trigger efficiency
(eCEM4/e CEM8) but
Dont have the numbers handy
Neglecting it as a first estimate should be fine
eCEM4 0.956, eCEM18 0.966
eCMUP4 0.92, eCMUP18 0.90
Rescale for the considered integrated luminosity

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eµ (20,8) selection
Meµ
MET
OS
SS
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µe (20,8) selection
Mµe
MET
OS
SS
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eµ (10,5) selection
Meµ
MET
OS
SS
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µe (10,5) selection
Mµe
MET
OS
SS
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Conclusions

Still a lot to understand ?
eµ (10,5) still problematic,
fakes did not solve the discrepancy
Any suggestion is more than welcome ?

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Data and MC

Data
SUSY dilepton dataset edil0d
Good run list v7 no silicon
224pb-1 up to February 2004
Dielectron events
DIELECTRON_CENTRAL_4 trigger
Dimuon events
DIMUON_CMUPCMUP4 trigger
Electron-Muon events
CEM4_CMUP4 trigger

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Data and MC

MC
Signal point 360fb-1 (m0100,m1/2180,A00,tanß5
,µgt0)
DY sexo9t (Z ?ll, Mllgt5GeV/c2) 5fb-1
ttbar (ttopel) 170fb-1
WW (wtop1w) 34fb-1
ZZ (multilepton) 535fb-1
WZgamma (MadGraph) 300-2500fb-1
bbbar (Giovanni) 30pb-1

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Lepton Selection

High pT (gt20GeV/c) CEM and CMUP selection
Standard top/ewk definition
4-20GeV/c pT range
Muon ID as in CDF 7197 (Purdue)
Electron ID as high pT
CEM ID Scale Factors
CMUP ID Scale Factors

SF ET CDF note 1.00
4-8GeV 7379 1.03 8-20GeV 7233
0.996 gt20GeV 7309
SF PT CDF note
0.85 4-20GeV 7197 0.881
gt20GeV 7309
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eµ Control Regions

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