JetMET Triggers for L=2e30 and L=2e31

1
JetMET Triggers for L2e30 and L2e31
2
Current Trigger Status

• L2e30 and 2e31 trigger menus have been presented
  for consideration by DPGs, POGs and PAGs
• TSG has agreed to use uncorrected jets in
  DiJetAve trigger paths. Still need to determine
  thresholds
• Should have same L1 thresholds as single jet
  triggers to take advantage of correlations with
  the single jet paths

3
Single Jet Thresholds
L2e30cm-2s-1 L2e30cm-2s-1 L2e31 cm-2s-1 L2e31 cm-2s-1 L1e32 cm-2s-1 L1e32 cm-2s-1
L1 Trigger HLT Threshold (GeV) Prescale Individual Rate (Hz) Presale Individual Rate (Hz) Presale Individual Rate (Hz)
L1_SingleJet15 30 200 10.6 5000 4.3 100000 1.1
L1_SingleJet15 40 100 5.1 1000 5.4 20000 1.3
L1_SingleJet30 50 20 8.8 500 3.8 10000 0.95
L1_SingleJet30 60 10 7.6 100 7.8 2000 2.0
L1_SingleJet50 80 1 21.5 100 2.3 1000 1.1
L1_SingleJet70 110 1 5.7 10 5.2 100 2.6
L1_SingleJet150 200 1 0.4 1 3.0 5 3.0
L1_SingleJet200 250 1 0.045 1 0.45 1 2.2
Total 30.8 Hz
Total 49.2 Hz
4
Level-1 Turn-On Curves
CMSSW 160

• Using dijet MC samples with 15 lt pT hat lt 300 GeV
• may bias lowest threshold plot somewhat
• L1 energy scale a bit off due to correction being
  derived in CMSSW 13x
• Should be save to use
• pT 50 GeV threshold at HLT with L1
  threshold at 30 GeV

5
Missing ET Thresholds
L2e30cm-2s-1 L2e30cm-2s-1 L2e31 cm-2s-1 L2e31 cm-2s-1
L1 Trigger HLT Threshold (GeV) Prescale Individual Rate (Hz) Presale Individual Rate (Hz)
L1_ETM10 20 ?? ?? ?? ??
L1_ETM15 30 ?? ?? ?? ??
L1_ETM40 55 1 ?? 1 ??
L1_ETM40 65 1 0.2 1 3.4
Some inconsistencies in the tables

• Proposal from Greg
• Use L1 thresholds of 15, 30 and 45 GeV
• Use HLT thresholds of 20, 35 and 50 GeV (To do
  check L1 turn-ons)

6
Level-1 EM Calorimeter Trigger

• E/? (Hit Tower Max)
• 2-tower ?ET gt threshold
• Hit tower H/E lt 5
• Hit tower 2x5-crystal strips gt90-95 of tower
  ET in 5x5 (Fine Grain)
• Isolated E/? (3x3 Towers)
• Quiet neighbors all towerspass Fine Grain
  H/E
• At least one of the 5-tower corners has ET lt
  threshold (1 GeV)

Sum ET of the central hit tower (pink) andthe
nearest neigbor w/ the highest ET (one of the
yellow towers)
7
HLT Selection of Photons and Electrons

• Photons
• Supercluster matched with L1 triggers with energy
  satisfying the L1 trigger threshold
• ECAL Energy within ?Rlt0.3 from the candidate less
  than a threshold (excluding the super-cluster
  itself)
• HCAL Energy within ?Rlt0.3 from the candidate less
  than a threshold
• Number of tracks with ?Rlt0.3 from the photon
  candidate less than a threshold

• Electrons
• Supercluster matched with L1 triggers with energy
  satisfying the L1 trigger threshold
• HCAL Energy within ?Rlt0.15 from the candidate
  less than a threshold
• Pixel match (or inner SiStrip matching)
• E/P for single electron trigger
• Pt Tracks with 0.02lt ?Rlt0.2 divided by Pt
  electron less than a threshold

8
HLT Selection Requirements
Single Electron Single Photon
? lt 2.6 lt 2.6
ET gt 26 GeV gt 80 GeV
TK isol lt 0.06 lt 1
HCAL isol barrel lt 3 GeV lt 6 GeV
HCAL isol endcaps lt 3 GeV lt 4 GeV
ECAL isol - lt 1.5 GeV
E/P Barrel lt 1.5 -
E/P Endcaps lt 2.45 -

• HCAL isolation criteria changed from EHcal lt 3
  GeV to
• EHcallt3 GeV .OR. EHcal gt 0.5 EEcal
• The E/p cut is to be replaced by 1/E -1/p.
  Probably will not be applied at the start-up or
  for low luminosity (below 1032 cm2s-1) running

9
Single Photon Thresholds
L2e30cm-2s-1 L2e30cm-2s-1 L2e31 cm-2s-1 L2e31 cm-2s-1
L1 Trigger HLT Threshold (GeV) Prescale Individual Rate (Hz) Presale Individual Rate (Hz)
?? 10 10 2.1 ?? ??
?? 10 (NoTrkIso) 100 1.0 1000 2.2
?? 15 1 6.3 ?? ??
?? 20 (NoTrkIso) 1 17.7 100 2.2
?? 25 1 .5 ?? ??
?? 30 1 0.3 1 1.2