SUSY DILEPTON TRIGGER

1
SUSY DILEPTON TRIGGER
M.Rossi, Udine University

• MONITORING
• Quality criterium needed ? two approaches
• PHYSICS_1_05_v-8 trigger table

2
TWO APPROACHES

• DOWNSTREAM APPROACH
• events selected by trigger path
• verify offline lepton content
• UPSTREAM APPROACH
• events selected by offline lepton
  content
• verify trigger paths

3
DOWNSTREAM APPROACH

• TRIGGER PATH lepton A lepton B _at_ trigger
  level
• For each TRIGGER PATH (T.P.) count
• N evts selected by the T.P.
• NA evts with offline lepton A
• NB evts with offline lepton B
• In ideal conditions R1 (Rpurity)
• For each lepton type, expect R values from
  different T.P. comparable ? ltRgt

RA NA/N and RB NB/N
4
DOWNSTREAM APPROACH
100K events, edil0c Before ExoticDiLepFilter After
ExoticDiLepFilter
ltRgt ltRgt
CEM 0.550.08 0.990.01
PEM 0.850.05 0.960.09
CMU 0.410.13 0.940.08
CMUP 0.650.11 0.970.04
CMX 0.520.12 0.820.22
Rbefore Rafter (except CMX4_PEM8)
5
UPSTREAM APPROACH

• Evts lepton A lepton B _at_ offline level
• Q ( Evts failing all corresponding T.P.)/(
  Evts)
• Qi ( Evts failing i-th T.P.)/( Evts)
• In ideal conditions Q Qi 0
• For each Lepton Pair Q inefficiency
• For each T.P. Qi inefficiency

6
UPSTREAM APPROACH

• Evts lepton A lepton B _at_ offline level
• LEG_A ( Evts that have lepton A _at_
  L1L2 trigger)/( Evts)
• LEG_B ( Evts that have lepton B _at_
  L1L2 trigger)/( Evts)
• In ideal conditions LEG_ALEG_B1
• LEGi CATEGORIES 1. LEG_A ! LEG_B
• 2.
  LEG_A LEG_B
• 3.
  Only LEG_A or LEG_B

7
UPSTREAM APPROACH
10K events, edil0d Before ExoticDiLepFilter
Lepton Pair Q (L3)
cem cem 0.03
cem pem 0.05
cem cmu 0.01
cem cmup 0.21
cem cmx 0.08
pem cmu 0.06
pem cmup 0.22
pem cmx 0.08
cmu cmu 0.02
cmu cmx 0
cmup cmup 0.29
cmup cmx 0.13
Single T.P. ? higher Q
8
UPSTREAM APPROACH
Lepton pair Q (L3) Trigger Path Qi (L3) LEG_A (L1L2) LEG_B (L1L2)
           
cem cem 0,03 14 0,09 0,960,01 0,960,01
    15 0,79 0,210,02 //
    16 0,9 0,100,02 //
cem pem 0,05 6 0,11 0,960,01 0,920,01
    7 0,85 0,150,01 //
    8 0,83 0,260,02 0,920,01
cem cmu 0,01 0 0,08 0,930,02 0,990,01
    1 0,95 0,050,01 //
    2 0,77 // 0,230,03
cem cmup 0,21 3 0,21 0,850,03 0,930,02
cem cmx 0,08 4 0,09 0,940,03 0,960,03
    5 0,94 0,060,03 //
9
UPSTREAM APPROACH
Lepton pair Q (L3) Trigger Path Qi (L3) LEG_A (L1L2) LEG_B (L1L2)
           
pem cmu 0,06 10 0,12 0,890,01 0,970,01
    11 0,92 // 0,170,01
pem cmup 0,22 12 0,22 0,840,03 0,950,01
pem cmx 0,08 13 0,08 0,950,02 0,990,01
cmu cmu 0,02 20 0,18 0,910,01 0,910,01
    21 0,55 0,460,03 //
cmu cmx 0 18 0,01 1,000,00 0,990,01
    19 0,96 0,040,01 //
cmup cmup 0,29 23 0,29 0,840,03 0,840,03
cmup cmx 0,13 22 0,22 1,000,00 0,870,06
10
UPSTREAM APPROACH
Qi and LEGi INFOs

• Qi 0 ? LEG_A 1 and LEG_B 1
• For Lepton Pair collected by several T.P. we see
  there is one T.P. that behaves particularly well
  w.r.t. the others.
• Considering LEG_A ! LEG_B,
• for each T.P. a big difference between the
  two LEGi means that
• one lepton is much more efficient than the
  other
• Results
• LEG_A LEG_B 0,05
• except for lepton pair cem cmup, pem cmup,
  cmup cmx
• LEG_A LEG_B 0,1
• and except for CEM8_PEM8 LEG_A LEG_B
  0,7

11
TRIGGER vs SIMULATION

• Most of the inconsistencies I had due to changes
  in the Event Record
• Remaining inconsistencies
• ? CMU4_PEM8 ?selecting events with cmu and
  pem offline
• TRIG0,
  SIM1
• ?these events
  collected by CMUP4_PEM8
• ?Vladimir
  study on events that fired
• 
  (CMU4_PEM8 or CMUP4_PEM8) CMU4_PEM8
• 
  most of electrons have Et3GeV, Eta1.4, Phi5.8
• ? DIELECTRON_CENTRAL_4 ?probably a problem
  due to the
• 
  separation of the 2 electrons
• 
  with SIM

12
CONCLUSIONS
R and Q variables point out problems with T.P.
MONITORING Quality criterium needed

• DOWNSTREAM ? CMX4_PEM8
• UPSTREAM ?CEM8_PEM8

NEXT

• Need to access more detailed information
• Monitoring the stability

13
TRIGGER PATH LIST

• 0) cem4_cmu4
• 1) cem4_cmu4_l2_cem8_pt8_ces2_und_trk8
• 2) cem4_cmu4_l2_trk8_l1_cmup6_pt4
• 3) cem4_cmup4
• 4) cem4_cmx4
• 5) cem4_cmx4_l2_cem8_pt8_ces2_und_trk8
• 6) cem4_pem8
• 7) cem4_pem8_l2_cem12_pt8
• 8) cem8_pem8
• 10) cmu4_pem8 _
• 11) cmu4_pem8_l2_trk8_l1_cmup6_pt4
• 12) cmup4_pem8
• 13) cmx4_pem8

14) dielectron_central_4 15) dielectron_central_4
_l2_cem12_pt8 16) dielectron_central_4_l2_cem8_pt8
_ces2_und_trk8 18) dimuon_cmu4_cmx4 19)
dimuon_cmu4_cmx4_l2_trk8_l1_cmup6_pt4 20)
dimuon_cmucmu4 21) dimuon_cmucmu4_l2_trk8_l1_cmup6
_pt4 22) dimuon_cmup4_cmx4 23) dimuon_cmupcmup4