HLT paths for the 8E29 "core" menu (v0.5, last updated on 2009.04.29)

This version of the High Level Trigger tables is a work in progress, tracking the latest development.
For a stable reference, please use an older, frozen version of this table:

  • v0.3, frozen on 2009.04.28.
  • v0.4, frozen on 2009.04.29.

Jets triggers Sort HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_L1Jet6U L1_SingleJet6U 25 20   6.50 ± 0.20 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_Jet15U L1_SingleJet6U 25 1   8.32 ± 0.22 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_Jet30U L1_SingleJet20U 1 1   17.71 ± 0.33 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_Jet50U L1_SingleJet30U 1 1   3.01 ± 0.13 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_DiJetAve15U L1_SingleJet6U 25 1   3.48 ± 0.15 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_DiJetAve30U L1_SingleJet20U 1 1   8.49 ± 0.23 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_FwdJet20U L1_IsoEG10_Jet6U_ForJet6U 1 1   5.62 ± 0.18 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_QuadJet15U L1_QuadJet6U 1 1   0.70 ± 0.07 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
MET triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_L1MET20 L1_ETM20 1 2   6.64 ± 0.20 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_MET35 L1_ETM30 1 1   0.26 ± 0.04 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_MET100 L1_ETM80 1 1   0.00 ± 0.00 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
Muons triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_L1MuOpen L1_SingleMuOpen OR L1_SingleMu0 1, 1 10   10.92 ± 0.26 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_L1Mu L1_SingleMu7 OR L1_DoubleMu3 1, 1 5   2.14 ± 0.11 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_L1Mu20 L1_SingleMu20 1 1   1.17 ± 0.08 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_L2Mu9 L1_SingleMu7 1 1   1.37 ± 0.09 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_L2Mu11 L1_SingleMu7 1 1   0.81 ± 0.07 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_Mu3 L1_SingleMuOpen OR L1_SingleMu0 OR L1_SingleMu3 1, 1, 1 1   22.83 ± 0.37 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_Mu5 L1_SingleMu3 1 1   7.53 ± 0.21 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_Mu9 L1_SingleMu7 1 1   0.95 ± 0.08 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_DoubleMu0 L1_DoubleMuOpen 1 1   0.43 ± 0.05 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_DoubleMu3 L1_DoubleMu3 1 1   0.17 ± 0.03 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_L1DoubleMuOpen L1_DoubleMuOpen 1 1   2.59 ± 0.13 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_IsoMu3 L1_SingleMu3 1 1   12.96 ± 0.28 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
Electrons triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_L1SingleEG5 L1_SingleEG5 1 50   8.29 ± 0.22 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_L1SingleEG8 L1_SingleEG8 1 10   7.85 ± 0.22 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_Ele10_LW_L1R L1_SingleEG5 1 1   11.38 ± 0.26 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_Ele10_LW_EleId_L1R L1_SingleEG5 1 1   2.34 ± 0.12 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_Ele15_LW_L1R L1_SingleEG8 1 1   2.61 ± 0.13 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_Ele15_SiStrip_L1R L1_SingleEG8 1 1   TBD Monitoring  
  HLT_Ele15_SC10_LW_L1R L1_SingleEG8 1 1   2.33 ± 0.12 Hz ES bit 3.1.x, 2.2.6-HLT, MWGR
  HLT_Ele20_LW_L1R L1_SingleEG8 1 1   0.92 ± 0.07 Hz ES bit 3.1.x, 2.2.6-HLT, MWGR
  HLT_L1DoubleEG5 L1_DoubleEG5 1 5   7.58 ± 0.21 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_DoubleEle5_SW_L1R L1_DoubleEG5 1 1   0.71 ± 0.07 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_DoublePhoton5_eeRes_L1R L1_SingleEG8 OR L1_DoubleEG5 1, 1 1   1.20 ± 0.09 Hz Physics 3.1.x
  HLT_DoublePhoton5_Jpsi_L1R L1_SingleEG8 OR L1_DoubleEG5 1, 1 1   0.65 ± 0.06 Hz Backup 3.1.x
  HLT_DoublePhoton5_Upsilon_L1R L1_SingleEG8 OR L1_DoubleEG5 1, 1 1   13.35 ± 0.28 Hz Backup 3.1.x
Photons triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_Photon10_L1R L1_SingleEG5 1 25   1.69 ± 0.10 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  HLT_Photon15_L1R L1_SingleEG8 1 1   10.60 ± 0.25 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_Photon15_TrackIso_L1R L1_SingleEG8 1 1   2.48 ± 0.12 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_Photon15_LooseEcalIso_L1R L1_SingleEG8 1 1   8.51 ± 0.23 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_Photon20_L1R L1_SingleEG8 1 1   3.65 ± 0.15 Hz Backup 3.1.x, 2.2.6-HLT, MWGR
  HLT_Photon30_L1R L1_SingleEG8 1 1   0.83 ± 0.07 Hz ES bit 3.1.x, 2.2.6-HLT, MWGR
  HLT_DoublePhoton10_L1R L1_DoubleEG5 1 1   2.32 ± 0.12 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
Tau triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_SingleLooseIsoTau20 L1_SingleTauJet20U OR L1_SingleJet30U 1, 1 1   19.10 ± 0.34 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_DoubleLooseIsoTau15 L1_DoubleTauJet14U OR L1_DoubleJet30U 1, 1 1   4.95 ± 0.17 Hz Physics 3.1.x, 2.2.6-HLT, MWGR
B jets triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_BTagIP_Jet50U L1_SingleJet30U 1 1   0.05 ± 0.02 Hz ES bit 3.1.x, 2.2.6-HLT, MWGR
  HLT_BTagMu_Jet10U L1_Mu3_Jet6U 1 1   0.00 ± 0.00 Hz ES bit 3.1.x, 2.2.6-HLT, MWGR
Abort Gap triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_StoppedHSCP L1_SingleJet6U 1 1   TBD Physics 3.1.x, 2.2.6-HLT, MWGR
Cross-channel triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_L1Mu14_L1SingleEG10 L1_SingleMu14 AND L1_SingleEG10 1, 1 1   TBD Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_L1Mu14_L1SingleJet6U L1_SingleMu14 AND L1_SingleJet6U 1, 25 1   TBD Physics 3.1.x, 2.2.6-HLT, MWGR
  HLT_L1Mu14_L1ETM30 L1_SingleMu14 AND L1_ETM30 1, 1 1   TBD Physics 3.1.x, 2.2.6-HLT, MWGR
MinBias triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_ZeroBias L1_ZeroBias 5000 1   11.98 ± 0.27 Hz MinBias 3.1.x
  HLT_MinBiasHcal L1_SingleHfBitCountsRing1_1 OR L1_DoubleHfBitCountsRing1_P1N1 OR L1_SingleHfRingEtSumsRing1_4 OR L1_DoubleHfRingEtSumsRing1_P4N4 OR L1_SingleHfRingEtSumsRing2_4 OR L1_DoubleHfRingEtSumsRing2_P4N4 1000, 100, 100, 100, 100, 100 500   0.37 ± 0.05 Hz MinBias 3.1.x, 2.2.6-HLT, MWGR
  HLT_MinBiasEcal L1_SingleEG1 OR L1_SingleEG2 OR L1_DoubleEG1 100, 100, 100 250   1.31 ± 0.09 Hz MinBias 3.1.x, 2.2.6-HLT, MWGR
  HLT_MinBiasPixel L1_ZeroBias 5000 1   TBD MinBias 3.1.x, 2.2.6-HLT, MWGR
  HLT_MinBiasPixel_Trk5 L1_ZeroBias 5000 1   TBD MinBias 3.1.x, 2.2.6-HLT, MWGR
Commissioning triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_CSCBeamHalo L1_SingleMuBeamHalo 1 1   7.48 ± 0.21 Hz Commissioning 3.1.x, 2.2.6-HLT, MWGR
  HLT_CSCBeamHaloOverlapRing1 L1_SingleMuBeamHalo 1 1   0.13 ± 0.03 Hz Commissioning 3.1.x, 2.2.6-HLT, MWGR
  HLT_CSCBeamHaloOverlapRing2 L1_SingleMuBeamHalo 1 1   0.00 ± 0.00 Hz Commissioning 3.1.x, 2.2.6-HLT, MWGR
  HLT_CSCBeamHaloRing2or3 L1_SingleMuBeamHalo 1 1   0.68 ± 0.06 Hz Commissioning 3.1.x, 2.2.6-HLT, MWGR
  HLT_BackwardBSC L1 Technical bits: 38 OR 39 TBD TBD   TBD Commissioning 3.1.x, 2.2.6-HLT, MWGR
  HLT_ForwardBSC L1 Technical bits: 36 OR 37 TBD TBD   TBD Commissioning 3.1.x, 2.2.6-HLT, MWGR
  HLT_TrackerCosmics L1 Technical bits: 24 OR 25 OR 26 OR 27 OR 28 TBD TBD   TBD Commissioning 3.1.x, 2.2.6-HLT, MWGR
AlCaRAW triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  HLT_IsoTrack L1_SingleJet20U OR L1_SingleJet30U OR L1_SingleJet40U OR L1_SingleJet50U OR L1_SingleJet60U OR L1_SingleTauJet10U OR L1_SingleTauJet20U OR L1_SingleTauJet30U OR L1_SingleTauJet50U 1, 1, 1, 1, 1, 1, 1, 1, 1 1   TBD AlCa 3.1.x, 2.2.6-HLT, MWGR
  AlCa_HcalPhiSym L1_SingleEG1 OR L1_SingleEG2 OR L1_DoubleEG1 100, 100, 100 1   TBD AlCa 3.1.x, 2.2.6-HLT, MWGR
  AlCa_EcalPhiSym L1_ZeroBias OR L1_SingleEG1 OR L1_SingleEG2 OR L1_DoubleEG1 OR L1_SingleHfBitCountsRing1_1 OR L1_DoubleHfBitCountsRing1_P1N1 OR L1_SingleHfRingEtSumsRing1_4 OR L1_DoubleHfRingEtSumsRing1_P4N4 OR L1_SingleHfRingEtSumsRing2_4 OR L1_DoubleHfRingEtSumsRing2_P4N4 5000, 100, 100, 100, 1000, 100, 100, 100, 100, 100 1   564.56 ± 1.86 Hz AlCa 3.1.x, 2.2.6-HLT, MWGR
  AlCa_EcalPi0 L1_SingleEG1 OR L1_SingleEG2 OR L1_SingleEG5 OR L1_SingleEG8 OR L1_SingleEG10 OR L1_SingleEG12 OR L1_SingleEG15 OR L1_SingleEG20 OR L1_SingleIsoEG5 OR L1_SingleIsoEG8 OR L1_SingleIsoEG10 OR L1_SingleIsoEG12 OR L1_SingleIsoEG15 OR L1_DoubleEG5 OR L1_SingleJet6U OR L1_SingleJet20U OR L1_SingleJet30U OR L1_SingleJet40U OR L1_SingleJet50U OR L1_DoubleJet30U 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 25, 1, 1, 1, 1, 1 1   TBD AlCa 3.1.x, 2.2.6-HLT, MWGR
  AlCa_EcalEta L1_SingleEG1 OR L1_SingleEG2 OR L1_SingleEG5 OR L1_SingleEG8 OR L1_SingleEG10 OR L1_SingleEG12 OR L1_SingleEG15 OR L1_SingleEG20 OR L1_SingleIsoEG5 OR L1_SingleIsoEG8 OR L1_SingleIsoEG10 OR L1_SingleIsoEG12 OR L1_SingleIsoEG15 OR L1_DoubleEG5 OR L1_SingleJet6U OR L1_SingleJet20U OR L1_SingleJet30U OR L1_SingleJet40U OR L1_SingleJet50U OR L1_DoubleJet30U 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 25, 1, 1, 1, 1, 1 1   TBD AlCa 3.1.x, 2.2.6-HLT, MWGR
Monitoring triggers HLT path L1 seeds L1 prescale HLT prescale L1 rate HLT rate Trigger Type Availability
  AlCa_RPCMuonNormalisation L1_SingleMuOpen OR L1_SingleMu0 1, 1 1   30.49 ± 0.43 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR
  AlCa_RPCMuonNoHits L1_SingleMuOpen OR L1_SingleMu0 1, 1 1   8.37 ± 0.23 Hz Monitoring 3.1.x, 2.2.6-HLT, MWGR

Links to the Trigger Reviews describing the algorithms and the POG/PAG triggers requests

L1 and HLT tables references

The following L1 menus contain the L1 seeds and are compatible with this HLT menu:

The following HLT tables are available in ConfDB:

Description of HLT paths for the 8E29 "core" menu

Jets trigger paths

HLT_L1Jet6U

HLT_Jet15U

  • The L1 seed is the L1 bit (prescaled):
  • Description:
    • A single jet trigger, requiring >= 1 jet at HLT with pT > 15 GeV.
    • The jet energy threshold is chosen based on uncorrected jets.
  • Contact person(s) for Jet HLT code integration:

HLT_Jet30U

  • The L1 seed is the L1 bit:
  • Description:
    • A single jet trigger, requiring >= 1 jet at HLT with pT > 30 GeV.
    • The jet energy threshold is chosen based on uncorrected jets.
  • Contact person(s) for Jet HLT code integration:

HLT_Jet50U

  • The L1 seed is the L1 bit:
  • Description:
    • A single jet trigger, requiring >= 1 jet at HLT with pT > 50 GeV.
    • The jet energy threshold is chosen based on uncorrected jets.
  • Contact person(s) for Jet HLT code integration:

HLT_DiJetAve15U

  • The L1 seed is the L1 bit (prescaled):
  • Description:
    • A dijet trigger, requiring at least one pair of jets at HLT in which the average scalar pT is > 15 GeV.
    • The jet energy threshold is chosen based on uncorrected jets.
  • Notes:
    • This trigger is available as HLT_DiJetAve15U_8E29 in the 3.1.x, 2.2.6-HLT, MWGR table(s).
  • Contact person(s) for Jet HLT code integration:

HLT_DiJetAve30U

  • The L1 seed is the L1 bit:
  • Description:
    • A dijet trigger, requiring at least one pair of jets at HLT in which the average scalar pT is > 30 GeV.
    • The jet energy threshold is chosen based on uncorrected jets.
  • Notes:
    • This trigger is available as HLT_DiJetAve30U_8E29 in the 3.1.x, 2.2.6-HLT, MWGR table(s).
  • Contact person(s) for Jet HLT code integration:

HLT_FwdJet20U

  • The L1 seed is the L1 bit:
  • Description:
    • A rapidity gap trigger, requiring at least 2 jets in the event and the sum of jet energies within the HF (3 < |eta| < 5) be less than 20 GeV.
    • The jet energy threshold is chosen based on uncorrected jets.
  • Contact person(s) for Jet HLT code integration:

HLT_QuadJet15U

MET trigger paths

HLT_L1MET20

  • The L1 seed is the L1 bit:
  • Description:
    • A MET pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for MET HLT code integration:

HLT_MET35

  • The L1 seed is the L1 bit:
  • Description:
    • A MET trigger, requiring the MET calculated at HLT be > 35 GeV.
  • Notes:
    • To be checked that the L1 threshold is not too high for the HLT threshold.
  • Contact person(s) for MET HLT code integration:

HLT_MET100

Muons trigger paths

HLT_L1MuOpen

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A single muon pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for Muon HLT code integration:

HLT_L1Mu

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A single muon pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for Muon HLT code integration:

HLT_L1Mu20

  • The L1 seed is the L1 bit:
  • Description:
    • A single muon pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for Muon HLT code integration:

HLT_L2Mu9

  • The L1 seed is the L1 bit:
  • Description:
    • A single muon trigger, based on the Level 2 (muon system only, no tracker) HLT muon reconstruction.
    • At least one Level 2 muon with pT > 9 GeV is required.
  • Contact person(s) for Muon HLT code integration:

HLT_L2Mu11

  • The L1 seed is the L1 bit:
  • Description:
    • A single muon trigger, based on the Level 2 (muon system only, no tracker) HLT muon reconstruction.
    • At least one Level 2 muon with pT > 11 GeV is required.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for Muon HLT code integration:

HLT_Mu3

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A single muon trigger, based on the Level 3 (combined muon system and tracker) HLT muon reconstruction.
    • At least one Level 3 muon with pT > 3 GeV is required.
    • The Level 3 muon is seeded by a Level 2 muon with pT > 3 GeV.
    • The two-dimensional Delta-XY between the Level 3 muon and the beam spot must be < 2 cm.
  • Contact person(s) for Muon HLT code integration:

HLT_Mu5

  • The L1 seed is the L1 bit:
  • Description:
    • A single muon trigger, based on the Level 3 (combined muon system and tracker) HLT muon reconstruction.
    • At least one Level 3 muon with pT > 5 GeV is required.
    • The Level 3 muon is seeded by a Level 2 muon with pT > 4 GeV.
    • The two-dimensional Delta-XY between the Level 3 muon and the beam spot must be < 2 cm.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for Muon HLT code integration:

HLT_Mu9

  • The L1 seed is the L1 bit:
  • Description:
    • A single muon trigger, based on the Level 3 (combined muon system and tracker) HLT muon reconstruction.
    • At least one Level 3 muon with pT >9 GeV is required.
    • The Level 3 muon is seeded by a Level 2 muon with pT > 7 GeV.
    • The two-dimensional Delta-XY between the Level 3 muon and the beam spot must be < 2 cm.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for Muon HLT code integration:

HLT_DoubleMu0

  • The L1 seed is the L1 bit:
  • Description:
    • A double muon trigger, based on the Level 3 (combined muon system and tracker) HLT muon reconstruction.
    • At least two Level 3 muons are required, without any pT cut.
    • Each Level 3 muon is seeded by a Level 2 muon, without any pT cut.
    • The two-dimensional Delta-XY between each Level 3 muon and the beam spot must be < 2 cm.
  • Contact person(s) for Muon HLT code integration:

HLT_DoubleMu3

  • The L1 seed is the L1 bit:
  • Description:
    • A double muon trigger, based on the Level 3 (combined muon system and tracker) HLT muon reconstruction.
    • At least two Level 3 muon with pT > 3 GeV are required.
    • Each Level 3 muon is seeded by a Level 2 muon with pT > 3 GeV.
    • The two-dimensional Delta-XY between each Level 3 muon and the beam spot must be < 2 cm.
  • Contact person(s) for Muon HLT code integration:

HLT_L1DoubleMuOpen

  • The L1 seed is the L1 bit:
  • Description:
    • A double muon pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for Muon HLT code integration:

HLT_IsoMu3

  • The L1 seed is the L1 bit:
  • Description:
    • A single muon trigger, based on the Level 3 (combined muon system and tracker) HLT muon reconstruction.
    • At least one Level 3 muon with pT > 3 GeV is required.
    • The Level 3 muon is seeded by a Level 2 muon with pT > 3 GeV.
    • Calorimetric isolation is required at L2.
    • Tracker isolation is required at L3.
    • The two-dimensional Delta-XY between the Level 3 muon and the beam spot must be < 2 cm.
  • Contact person(s) for Muon HLT code integration:

Electrons trigger paths

HLT_L1SingleEG5

HLT_L1SingleEG8

HLT_Ele10_LW_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single electron trigger, using the large pixel-matching window ("LW") at HLT.
    • The supercluster used to seed the pixel matching must have ET > 5 GeV and H/E < 0.2.
    • At least one HLT electron with ET > 10 GeV is required.
    • No isolation is required.
  • Contact person(s) for EGamma HLT code integration:

HLT_Ele10_LW_EleId_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single electron trigger, using the large pixel-matching window ("LW") at HLT.
    • The supercluster used to seed the pixel matching must have ET > 5 GeV and H/E < 0.2, and pass an electron identification cut based on cluster shape variables.
    • At least one HLT electron with ET > 10 GeV is required.
    • No isolation is required.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for EGamma HLT code integration:

HLT_Ele15_LW_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single electron trigger, using the large pixel-matching window ("LW") at HLT.
    • The supercluster used to seed the pixel matching must have ET > 5 GeV and H/E < 0.2.
    • At least one HLT electron with ET > 15 GeV is required.
    • No isolation is required.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for EGamma HLT code integration:

HLT_Ele15_SiStrip_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single electron trigger, using electron seeds made only of hits in the Si Strip tracker (i.e. pixel-less) at HLT.
    • The supercluster used to seed the pixel matching must have ET > 5 GeV and H/E < 0.2.
    • At least one HLT electron with ET > 15 GeV is required.
    • No isolation is required.
  • Notes:
    • This is a monitoring trigger to check the pixel-matching performance of the physics trigger.
    • It could serve as a backup trigger in case the pixel-matching performance of the physics trigger is below expectation.
  • Contact person(s):

HLT_Ele15_SC10_LW_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single electron trigger, using the large pixel-matching window ("LW") at HLT.
    • The supercluster used to seed the pixel matching must have ET > 5 GeV and H/E < 0.2.
    • At least one HLT electron with ET > 15 GeV is required.
    • An additional supercluster with ET > 10 GeV is required.
    • No isolation is required.
  • Notes:
    • This trigger specifies an express stream (ES) bit.
  • Contact person(s) for EGamma HLT code integration:

HLT_Ele20_LW_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single electron trigger, using the large pixel-matching window ("LW") at HLT.
    • The supercluster used to seed the pixel matching must have ET > 5 GeV and H/E < 0.2.
    • At least one HLT electron with ET > 20 GeV is required.
    • No isolation is required.
  • Notes:
    • This trigger specifies an express stream (ES) bit.
  • Contact person(s) for EGamma HLT code integration:
  • Contact person(s) for EWK PAG contact:

HLT_L1DoubleEG5

HLT_DoubleEle5_SW_L1R

HLT_DoublePhoton5_eeRes_L1R

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A double photon trigger, requiring at least two HLT photons with ET > 5 GeV.
    • An invariant mass cut is applied: M(ee) > 2.0 GeV.
    • No isolation is required.
  • Contact person(s) for EGamma HLT code integration:

HLT_DoublePhoton5_Jpsi_L1R

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A double photon trigger, requiring at least two HLT photons with ET > 5 GeV.
    • An invariant mass cut is applied:2.0 < M(ee) < 4.5 GeV.
    • No isolation is required.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for EGamma HLT code integration:

HLT_DoublePhoton5_Upsilon_L1R

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A double photon trigger, requiring at least two HLT photons with ET > 5 GeV.
    • An invariant mass cut is applied: 8.0 < M(ee) < 11.0 GeV.
    • No isolation is required.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for EGamma HLT code integration:

Photons trigger paths

HLT_Photon10_L1R

HLT_Photon15_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single photon trigger, requiring at least one HLT photon with ET > 15 GeV.
    • No isolation is required.
  • Contact person(s) for EGamma HLT code integration:

HLT_Photon15_TrackIso_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single photon trigger, requiring at least one HLT photon with ET > 15 GeV.
    • Track isolation is required, with 1 or 0 tracks in the isolation cone.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for EGamma HLT code integration:

HLT_Photon15_LooseEcalIso_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single photon trigger, requiring at least one HLT photon with ET > 15 GeV.
    • Loose ECAL isolation is required, with < 3 GeV or 10% of the photon energy in the isolation cone.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for EGamma HLT code integration:

HLT_Photon20_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single photon trigger, requiring at least one HLT photon with ET > 20 GeV.
    • No isolation is required.
  • Notes:
    • This is a backup trigger in case the one proposed for physics needs to be prescaled.
  • Contact person(s) for EGamma HLT code integration:

HLT_Photon30_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A single photon trigger, requiring at least one HLT photon with ET > 30 GeV.
    • No isolation is required.
  • Notes:
    • This trigger specifies an express stream (ES) bit.
    • This trigger is available as HLT_Photon30_L1R_8E29 in the 3.1.x table(s).
  • Contact person(s) for EGamma HLT code integration:

HLT_DoublePhoton10_L1R

  • The L1 seed is the L1 bit:
  • Description:
    • A double photon trigger, requiring at least two HLT photons with ET > 10 GeV.
    • No isolation is required.
  • Contact person(s) for EGamma HLT code integration:

Tau trigger paths

HLT_SingleLooseIsoTau20

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A single tau trigger, requiring at least one HLT tau with ET > 20 GeV.
    • A relaxed ECAL isolation cut is applied, requiring the sum of the ET in an annulus 0.15 < R < 0.5 to be ΣET < 5 GeV + 0.025 × ET + 0.0075 × ET ² / GeV.
  • Notes:
    • To be checked that the L1_SingleTauJet20U threshold is not too high for the HLT threshold.
  • Contact person(s) for Particle flow and Tau HLT code integration:

HLT_DoubleLooseIsoTau15

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • A double tau trigger, requiring at least two HLT taus with ET > 15 GeV.
    • A relaxed ECAL isolation cut is applied, requiring the sum of the ET in an annulus 0.15 < R < 0.5 to be ΣET < 5 GeV + 0.025 × ET + 0.0075 × ET ² / GeV.
  • Contact person(s) for Particle flow and Tau HLT code integration:

B jets trigger paths

HLT_BTagIP_Jet50U

  • The L1 seed is the L1 bit:
  • Description:
    • A single jet lifetime-based b-tag trigger, requiring >= 1 jet at L2 with pT > 50 GeV.
    • The 50 GeV threshold is chosen based on unorrected jets.
    • One of the four highest-ET jets is required to pass a loose lifetime b-tagging cuts, based on STARTUP tracker alignment.
  • Notes:
    • This trigger specifies an express stream (ES) bit.
  • Contact person(s) for BTag HLT code integration:

HLT_BTagMu_Jet10U

  • The L1 seed is the L1 bit:
  • Description:
    • A single jet soft muon b-tag trigger, requiring >= 1 jet at L2 with pT > 10 GeV.
    • The 10 GeV threshold is chosen based on uncorrected jets.
    • It is required to have an L2 and L3 muon within one of the four highest-ET jets.
  • Notes:
    • This trigger specifies an express stream (ES) bit.
  • Contact person(s) for BTag HLT code integration:

Abort Gap trigger paths

HLT_StoppedHSCP

  • The L1 seed is the L1 bit:
  • Description:
    • Dedicated trigger for stopped particle search.
    • The L1 seed is a calo jet during a period of no collisions.
    • The HLT path applies cuts to reject HCAL noise (hltHpdFilter), constructs jets from HCAL only, and cuts on jet energy (not Et).
  • Notes:
    • The 2.2.6-HLT version is still cutting on Et instead of E.
    • This trigger is available as HLT_StoppedHSCP_8E29 in the 3.1.x, 2.2.6-HLT, MWGR table(s).
  • Contact person(s) for Developer for Exotica PAG:

Cross-channel trigger paths

HLT_L1Mu14_L1SingleEG10

  • The L1 seed is a logical AND of the following L1 bits:
  • Description:
    • A cross-channel L1 pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for Exotica HLT code integration:

HLT_L1Mu14_L1SingleJet6U

  • The L1 seed is a logical AND of the following L1 bits (prescaled):
  • Description:
    • A cross-channel L1 pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for Exotica HLT code integration:

HLT_L1Mu14_L1ETM30

  • The L1 seed is a logical AND of the following L1 bits:
  • Description:
    • A cross-channel L1 pass-through trigger.
    • No selections beyond L1 are required in the HLT.
  • Contact person(s) for Exotica HLT code integration:

MinBias trigger paths

HLT_ZeroBias

  • The L1 seed is the L1 bit (prescaled):
  • Description:
    • An unbiased trigger.
  • Notes:
    • L1_ZeroBias is not available in the 2.2.6-HLT L1 trigger table; L1_MinBias_HTT10 is used instead.
  • Contact person(s):

HLT_MinBiasHcal

HLT_MinBiasEcal

  • The L1 seed is a logical OR of the following L1 bits (prescaled):
  • Description:
    • At HLT, only a prescale factor is applied
  • Notes:
    • L1_SingleEG1 will be masked in favor of L1_SingleEG2 if the ECAL noise is too high.
  • Contact person(s):

HLT_MinBiasPixel

  • The L1 seed is the L1 bit (prescaled):
  • Description:
    • There must be 2 (default) tracks with pT above 0.2 GeV/c and having same origin (within 1 cm in |z|)
  • Notes:
    • L1_ZeroBias is not available in the 2.2.6-HLT L1 trigger table; L1_MinBias_HTT10 is used instead.
  • Contact person(s):

HLT_MinBiasPixel_Trk5

  • The L1 seed is the L1 bit (prescaled):
  • Description:
    • There must be 2 (default) tracks with pT above 0.2 GeV/c and having same origin (within 1 cm in |z|)
  • Notes:
    • L1_ZeroBias is not available in the 2.2.6-HLT L1 trigger table; L1_MinBias_HTT10 is used instead.
  • Contact person(s):

Commissioning trigger paths

HLT_CSCBeamHalo

  • The L1 seed is the L1 bit:
  • Description:
    • Selects events that pass the L1_SingleMuBeamHalo bit (all CSC beam-halo).
    • No selections beyond L1 are required in the HLT.
  • Contact person(s):

HLT_CSCBeamHaloOverlapRing1

  • The L1 seed is the L1 bit:
  • Description:
    • Selects events that pass the L1_SingleMuBeamHalo bit (all CSC beam-halo)..
    • Requires a pattern of CSC RecHits that indicate that the muon has passed through the narrow overlap region in pairs of neighboring chambers, in the CSC inner ring (ring 1).
    • This represents a ~1/50 reduction in rate, and these events are very valuable for alignment
  • Contact person(s):

HLT_CSCBeamHaloOverlapRing2

  • The L1 seed is the L1 bit:
  • Description:
    • Selects events that pass the L1_SingleMuBeamHalo bit (all CSC beam-halo)..
    • Requires a pattern of CSC RecHits that indicate that the muon has passed through the narrow overlap region in pairs of neighboring chambers, in the CSC outer ring (ring 2).
    • This represents a ~1/50 reduction in rate, and these events are very valuable for alignment
  • Contact person(s):

HLT_CSCBeamHaloRing2or3

  • The L1 seed is the L1 bit:
  • Description:
    • Selects events that pass the L1_SingleMuBeamHalo bit (all CSC beam-halo).
    • Additionally requires CSC RecHits in rings 2 (ME1/2, 2/2, or 3/2) or 3 (ME1/3), which are more rare and therefore more valuable.
    • This trigger has applications beyond alignment.
  • Contact person(s):

HLT_BackwardBSC

  • The L1 seed is a logical OR of the following L1 technical bits:
  • The L1 prescale factors are still to be determined.
  • Description:
    • Selects events that pass the L1 technical trigger for the Beam Scintillation Counter, for beam-halo in the tracker.
    • There are two L1 bits, corresponding to forward and backward-going beam-halo muons (from their timing), and these are passed to two HLT paths.
  • Contact person(s):

HLT_ForwardBSC

  • The L1 seed is a logical OR of the following L1 technical bits:
  • The L1 prescale factors are still to be determined.
  • Description:
    • Selects events that pass the L1 technical trigger for the Beam Scintillation Counter, for beam-halo in the tracker.
    • There are two L1 bits, corresponding to forward and backward-going beam-halo muons (from their timing), and these are passed to two HLT paths.
  • Contact person(s):

HLT_TrackerCosmics

  • The L1 seed is a logical OR of the following L1 technical bits:
  • The L1 prescale factors are still to be determined.
  • Description:
    • Selects events that pass the L1 technical trigger for RPC cosmics.
    • To be made more restrictive, to select cosmic rays that actually point to the tracker (to be reviewed).
  • Contact person(s):

AlCaRAW trigger paths

HLT_IsoTrack

AlCa_HcalPhiSym

  • The L1 seed is a logical OR of the following L1 bits (prescaled):
  • Description:
    • The path is asking for having at least one HCALRecHit with > 0 MeV in any of HCAL subdetector.
    • Only HcalRecHit collection will be stored from that events.
    • This path should run only on the interspersed non-zero-suppressed events.
    • The filter to implement this functionality is still missing.
    • Typical events size is ~100 kB.
  • Notes:
    • L1_SingleEG1 will be masked in favor of L1_SingleEG2 if the ECAL noise is too high.
  • Contact person(s) for AlCa code integration:

AlCa_EcalPhiSym

AlCa_EcalPi0

AlCa_EcalEta

Monitoring trigger paths

AlCa_RPCMuonNormalisation

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • This path is a copy of HLT_L1MuOpen up to |eta|<1.6 following the coverage of RPC chambers.
    • The events recorded by such path will be used by RPC people in order to normalize their efficiency calculation.
    • The output of the path is composed of Digis and RecHits from each muon subdetector.
  • Notes:
    • These two paths are needed for monitoring the RPC chambers. The statement AlCa_ only signify that they are part of a dedicated stream (not that they are part of Alignement/Claibration workflow)
  • Contact person(s) for AlCa code integration:

AlCa_RPCMuonNoHits

  • The L1 seed is a logical OR of the following L1 bits:
  • Description:
    • This path is seeded by the same L1 seeds that the previous one and go up to |eta|<1.6.
    • It will select "pathological" events for RPC: events where DT or CSC have seen muon hits but not RPC chambers.
    • The selection of the event is based on L1MuonQuality bit (== 6).
    • The output of the path is composed of Digis and RecHits from each muon subdetector.
  • Notes:
    • These two paths are needed for monitoring the RPC chambers. The statement AlCa_ only signify that they are part of a dedicated stream (not that they are part of Alignement/Claibration workflow)
  • Contact person(s) for AlCa code integration:

E/gamma pixel matching windows

The electron pixel matching windows are defined by the variables:
  • ePhi1: searching window in phi for the first hit in the electron hypothesis
  • pPhi1: searching window in phi for the first hit in the positron hypothesis
  • Phi2: searching window for the second hit (after the first hit the charge of the candidate seed is assigned )
  • r2 F: searching window for the second hit in the endcap
  • z2 B: searching window for the second hit in the barrel

Three sets of matching windows are used: Normal, Startup, and Large. The values of the window variables in each are:

Normal window

Variable Minimum Maximum
ePhi1 -0.025 0.015
pPhi1 -0.015 0.025
Phi2 -0.005 0.005
r2 F -0.08 0.08
z2 B -0.05 0.05

Startup window (SW)

Variable Minimum Maximum
ePhi1 -0.025 0.015
pPhi1 -0.015 0.025
Phi2 -0.001 0.001
r2 F -0.096 0.096
z2 B -0.06 0.06

Large window (LW)

Variable Minimum Maximum
ePhi1 -0.045 0.03
pPhi1 -0.03 0.045
Phi2 -0.001 0.001
r2 F -0.3 0.3
z2 B -0.2 0.2

L1 seeds

Jet and MET seeds

L1 bit Requirement
L1_SingleJetX 1 Jet with Et > X GeV
L1_DoubleJetX 2 Jets with Et > X GeV
L1_ETMX L1 Missing-ET with Et > X GeV
L1_ETTX L1 Scalar Sum ET with Et > X GeV

Muon seeds

All L1 muon triggers have L1 muon-quality requirements, unless explicitly specified.

The L1 muon-quality for:

  • Single muon triggers require quality codes: 4 or 5 or 6 or 7
  • Double muon triggers require: 3 or 5 or 6 or 7
  • Triple or quadruple muon triggers require: 2, 3, 4, 5, 6, 7
  • Muons in cross-channel triggers require the same quality codes as in single, double, triple or quadruple muon triggers, except for muons in cross-channel triggers of the type "SingleMu_* AND (other than muons trigger objects)" which requires the same quality codes as in double muon triggers.

Where the quality codes mean:

  • 0 : Empty muon
  • 1 : Halo muon
  • 2 : Very Low Quality Type 1
  • 3 : Very Low Quality Type 2
  • 4 : Very Low Quality Type 3
  • 5 : RPC unconfirmed candidate
  • 6 : DT or CSC unconfirmed candidate
  • 7 : DT/RPC or CSC/RPC Matched candidate

For more information about muon quality please see L1 muon quality.

L1 bit Requirement
L1_SingleMuX 1 Muon with pT > X GeV/c
L1_DoubleMuX 2 Muons with pT > X GeV/c
L1_SingleMuOpen 1 Muon with quality 2, 3, 4, 5, 6 or 7; no pT cut
L1_DoubleMuOpen 2 Muons, each with quality 2, 3, 4, 5, 6 or 7; no pT cut

Electron/Photon seeds

L1 bit Requirement
L1_SingleEGX 1 EM object with Et > X GeV
L1_DoubleEGX 2 EM objects with Et > X GeV
L1_SingleIsoEGX 1 isolated EM object with Et > X GeV
L1_DoubleIsoEGX 2 isolated EM objects with Et > X GeV

Tau seeds

L1 bit Requirement
L1_SingleTauJetX 1 Tau jet with Et > X GeV
L1_DoubleTauJetX 2 Tau jets with Et > X GeV

WarningIn OpenHLT from CMSSW 21X and in regular HLT from 30X the L1 seeds to L2 are L1 Tau & L1 Central Jets!

Mixed-object seeds

L1 bit Requirement
L1_IsoEG10_Jet15_ForJet10 At least one 20 GeV L1 jet, one 10 GeV L1 EM object, and a forward rapidity gap, (Detailed description)
L1_TauJet30_ETM30 1 Tau jet with Et > 30 GeV and Missing-ET with Et > 30 GeV
L1_Mu5_Jet15 1 Jet with Et > 15 GeV and 1 Muon with pT > 5 GeV/c


The tables and algorthm descriptions have been autogenerated from the tools and content available at https://twiki.cern.ch/twiki/bin/view/Sandbox/TriggerMenuTools - please do not edit them directly.

The additional comments are included from a sub-topic - feel free to add further comments and corrections there.

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Topic revision: r48 - 2020-08-19 - TWikiAdminUser
 
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