SUSY DILEPTON TRIGGER MONITORING

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SUSY DILEPTON TRIGGER MONITORING

• M.Rossi
• (Udine University)

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MONITORING VARIABLES

• R ? events collected by the trigger path having
• one of the corresponding reconstructed
  lepton
• (per trigger path R1?1st lepton, R2?2nd
  lepton)
• Q ? events, that have two reconstructed leptons,
• not collected by the corresponding
  trigger path
• Rate ? fraction of events collected by trigger
  path
• over the luminosity of the run

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RUNS

• ONLINE bits required to be good
• CLC,L1T,L2T,L3T,CAL,COT,CMU,CMP,CMX,SMX
• OFFLINE bits required to be good
• COT,CAL,CMU,CMP,CMX
• RUN lt 179056, when COT problems started (February
  13, 2004)

938 RUNS, 220 pb-1
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NOW CONSIDERING

• RUNS
• 929 runs, 215 pb-1
• Time range 2002.03 2004.02
• Trigger table range PHYSICS_1_01_v1 /
• PHYSICS_2_01_v4

• TRIGGER PATHS
• CEM4_CEM4
• CEM4_CMUP4
• CEM4_CMX4
• CMUP4_CMUP4
• CMUP4_CMX4

with all preselected runs the behaviour of
the monitoring variables is consistent with 782
runs
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Example CEM4_CEM4
run 144628-150799
run 163113-163136
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STEP run 144628-150799
PHYSICS_1_01_v7 VS PHYSICS_1_02_v3
Cut on CES in L2
STEP run 163113-163136
PHYSICS_1_04_v9 VS PHYSICS_1_05_v1

• Nearly all electron and photon L3 triggers
• tightened
• polar angle from track for electrons
• New EM filter in 4.8.4

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CONSIDERING from PHYSICS_1_05_v8

• RUNS
• 237 runs, 45 pb-1
• Time range 2003.08 2004.02

• TRIGGER PATH FAMILIES
• CEM4_CEM4
• ? CEM4_CEM4
• ? CEM4_CEM4_L2_CEM12_PT8
• ? CEM4_CEM4_L2_CEM8_PT8_CES2__TRK8
• CEM4_CMU4
• ? CEM4_CMU4
• ? CEM4_CMU4_L2_CEM8_PT8_CES2__TRK8
• ? CEM4_CMU4_L2_TRK8_L1_CMUP6_PT4

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Q CEM4_CEM4
SECONDARY Trigger Paths
MAIN Trigger Path
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R CEM4_CEM4
SECONDARY Trigger Paths
MAIN Trigger Path
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Rate CEM4_CEM4
SECONDARY Trigger Paths
MAIN Trigger Path
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Q CEM4_CMU4
SECONDARY Trigger Paths
MAIN Trigger Path
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R1 CEM4_CMU4
SECONDARY Trigger Paths
MAIN Trigger Path
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R2 CEM4_CMU4
SECONDARY Trigger Paths
MAIN Trigger Path
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Rate CEM4_CMU4
SECONDARY Trigger Paths
MAIN Trigger Path
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Summary

• PHYSICS_1_05_v8
• ?R, Q distributions indicate a
• stable trigger behaviuor
• ?Under investigation Rate
• fluctuations
• NEXT
• 929 runs considered ? complete 938 runs

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BACKUPDOWNSTREAM APPROACH

• For each TRIGGER PATH (T.P.) count
• N evts selected by the T.P.
• N1 evts with offline lepton 1
• N2 evts with offline lepton 2
• In ideal conditions R1 (Rpurity)
• For each lepton type, expect R values from
  different T.P. comparable and stable in time

R1 N1/N and R2 N2/N
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BACKUPUPSTREAM APPROACH

• N12 events with lepton 1 lepton 2
• offline level
• N0 events failing the i-th T.P.
• Qi N0/NAB
• In ideal conditions Qi 0