SUSY DILEPTON TRIGGER

1. M.Rossi, Udine University SUSY DILEPTON TRIGGER MONITORING: Quality criterium needed  two approaches PHYSICS_1_05_v-8 trigger table Multilepton Meeting

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 Multilepton Meeting

3. DOWNSTREAMAPPROACH • TRIGGER PATH ≡ lepton A && lepton B @ 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 R=1 (R~purity) • For each lepton “type”, expect R values from different T.P. comparable  <R> RA≡ NA/N and RB ≡ NB/N Multilepton Meeting

4. DOWNSTREAM APPROACH 100K events, edil0c Before ExoticDiLepFilter After ExoticDiLepFilter Rbefore≤ Rafter (except CMX4_PEM8) Multilepton Meeting

5. UPSTREAM APPROACH • Evts ≡ lepton A && lepton B @ 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 Multilepton Meeting

6. TRIGGERPATH LEG_A LEG_B UPSTREAM APPROACH • Evts ≡ lepton A && lepton B @ offline level LEG_A ≡ (# Evts that have lepton A @ L1L2 trigger)/(# Evts) LEG_B ≡ (# Evts that have lepton B @ L1L2 trigger)/(# Evts) • In ideal conditions LEG_A=LEG_B=1 • LEGi CATEGORIES 1. LEG_A != LEG_B 2. LEG_A = LEG_B 3. Only LEG_A or LEG_B Multilepton Meeting

7. UPSTREAM APPROACH 10K events, edil0d Before ExoticDiLepFilter Single T.P.  higher Q Multilepton Meeting

8. UPSTREAM APPROACH Multilepton Meeting

9. UPSTREAM APPROACH Multilepton Meeting

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 Multilepton Meeting

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 TRIG=0, SIM=1 ►these events collected by CMUP4_PEM8 ►Vladimir study on events that fired (CMU4_PEM8 orCMUP4_PEM8) – CMU4_PEM8 most of electrons have Et=3GeV, Eta=1.4, Phi=5.8  DIELECTRON_CENTRAL_4 : ►probably a problem due to the separation of the 2 electrons with SIM Multilepton Meeting

12. CONCLUSIONS R and Q variables pointout problems with T.P. MONITORING: Quality criterium needed • DOWNSTREAM► CMX4_PEM8 • UPSTREAM►CEM8_PEM8 NEXT • Need to access more detailed information • Monitoring the stability Multilepton Meeting

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 Multilepton Meeting