1. SUSY DILEPTON TRIGGER MONITORING
M.Rossi
(Udine University)
July 19, 2004
Multilepton Meeting

2. RUNS 938 RUNS, 220 pb-1 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 < , when COT problems started (February 13, 2004)
938 RUNS, 220 pb-1
July 19, 2004
Multilepton Meeting

3. NOW CONSIDERING RUNS TRIGGER PATHS 782 runs, 140 pb-1
Time range: –
Trigger table range: PHYSICS_1_01_v1 /
PHYSICS_2_01_v4
TRIGGER PATHS
CEM4_CEM4 (DIELECTRON_CENTRAL_4)
CEM4_CMUP4
CEM4_CMX4
CMUP4_CMUP4
CMUP4_CMX4
July 19, 2004
Multilepton Meeting

4. 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  events collected by trigger path
over the luminosity of the run
July 19, 2004
Multilepton Meeting

5. CEM4_CMUP4 run run 168000-168086 144628-150799 run 163113-163136 run
July 19, 2004
Multilepton Meeting

6. CEM4_CMX4
run
July 19, 2004
Multilepton Meeting

7. CEM4_CEM4
July 19, 2004
Multilepton Meeting

8. CMUP4_CMX4
July 19, 2004
Multilepton Meeting

9. CMUP4_CMUP4
July 19, 2004
Multilepton Meeting

10. all Q distributions becomes
STEP run
PHYSICS_1_05_v7 VS PHYSICS_1_05_v8
New SUSY Dilepton paths to use 4 GeV CMU
rather than restricting to CMUP
Lower CEM to 4 GeV to match other SUSY paths
New SUSY Dilepton backup paths
all Q distributions becomes
less stable
July 19, 2004
Multilepton Meeting

11. big step in rate distributions
STEP run
PHYSICS_1_01_v7 VS PHYSICS_1_02_v3
Tighter CMX extrapolation
(new version of L1 trigger for all CMX paths)
Cut on CES in L2
big step in rate distributions
for CEM paths
July 19, 2004
Multilepton Meeting

12. all rate distributions
STEP run
PHYSICS_1_05_v6 VS PHYSICS_1_05_v7
Add COT and Silicon data compression to
reconstruction trigger in Level 3 for good
Add MONITOR_DAQ_ERROR_v1
to find problems like BC miss match
using new filter
all rate distributions
becomes less stable
July 19, 2004
Multilepton Meeting

13. step in R distributions
STEP run
PHYSICS_1_04_v9 VS PHYSICS_1_05_v1
Nearly all electron and photon L3 triggers
tightened
sinθ from track for electrons
New EM filter in as 3-tower had/em
step in R distributions
for CEM paths
July 19, 2004
Multilepton Meeting

14. step in R and rate distribution
STEP run
PHYSICS_1_02_v7 VS PHYSICS_1_03_v1
Add scintillator CSX to all CMX L1 triggers
step in R and rate distribution
for CEM4_CMX4 path
July 19, 2004
Multilepton Meeting

15. Summary R: locally flat distribution that reflects
changes in the trigger table
 locally stable trigger behaviuor
NEXT
782 runs considered  complete 938 runs
July 19, 2004
Multilepton Meeting

16. BACKUP DOWNSTREAM 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 R=1 (R~purity)
For each lepton “type”, expect R values from different T.P. comparable and stable in time
R1 ≡ N1/N and R2 ≡ N2/N
July 19, 2004
Multilepton Meeting

17. BACKUP UPSTREAM APPROACH
N12 ≡ events with lepton 1 && lepton 2
reconstructed offline level
N0 ≡ events failing the i-th T.P.
Qi ≡ N0/NAB
In ideal conditions Qi = 0
July 19, 2004
Multilepton Meeting