namespace Gambit::ColliderBit::ATLAS

ATLAS-specific efficiency and smearing functions for super fast detector simulation.

Functions #

Functions Documentation #

function applyElectronEff #

inline void applyElectronEff(
    std::vector< const HEPUtils::Particle * > & electrons
)

Note: Should be applied after the electron energy smearing

Randomly filter the supplied particle list by parameterised electron efficiency

function applyMuonEff #

inline void applyMuonEff(
    std::vector< const HEPUtils::Particle * > & muons
)

Randomly filter the supplied particle list by parameterised muon efficiency.

function applyMuonEffR2 #

inline void applyMuonEffR2(
    std::vector< const HEPUtils::Particle * > & muons
)

Randomly filter the supplied particle list by parameterised muon efficiency.

function applyTauEfficiencyR1 #

inline void applyTauEfficiencyR1(
    std::vector< const HEPUtils::Particle * > & taus
)

Note: From Delphes 3.1.2

Todo: Use https://cds.cern.ch/record/1233743/files/ATL-PHYS-PUB-2010-001.pdf– it is more accurate and has pT-dependence

Randomly filter the supplied particle list by parameterised Run 1 tau efficiency

function applyTauEfficiencyR2 #

inline void applyTauEfficiencyR2(
    std::vector< const HEPUtils::Particle * > & taus
)

Note:

• From Delphes 3.3.2 & ATL-PHYS-PUB-2015-045, 60% for 1-prong, 70% for multi-prong: this is wrong!!
• No delete, because this should only ever be applied to copies of the Event Particle* vectors in Analysis routines

Randomly filter the supplied particle list by parameterised Run 2 tau efficiency

function applyPhotonEfficiencyR2 #

inline void applyPhotonEfficiencyR2(
    std::vector< const HEPUtils::Particle * > & photons
)

function smearElectronEnergy #

inline void smearElectronEnergy(
    std::vector< HEPUtils::Particle * > & electrons
)

Randomly smear the supplied electrons’ momenta by parameterised resolutions.

function smearMuonMomentum #

inline void smearMuonMomentum(
    std::vector< HEPUtils::Particle * > & muons
)

Randomly smear the supplied muons’ momenta by parameterised resolutions.

function smearJets #

inline void smearJets(
    std::vector< HEPUtils::Jet * > & jets
)

Randomly smear the supplied jets’ momenta by parameterised resolutions.

TodoIs this the best way to smear? Should we preserve the mean jet energy, or pT, or direction?

function smearMET #

inline void smearMET(
    HEPUtils::P4 & pmiss,
    double set
)

Randomly smear the MET vector by parameterised resolutions.

function smearTaus #

inline void smearTaus(
    std::vector< HEPUtils::Particle * > & taus
)

Randomly smear the supplied taus’ momenta by parameterised resolutions.

TodoIs this the best way to smear? Should we preserve the mean jet energy, or pT, or direction?

function applyLooseIDElectronSelectionR2 #

inline void applyLooseIDElectronSelectionR2(
    std::vector< const HEPUtils::Particle * > & electrons
)

Note: Numbers digitised from Fig 3 of 13 TeV note (ATL-PHYS-PUB-2015-041)

Todo: What about faking by jets or non-electrons?

Efficiency function for Loose ID electrons

function applyLooseIDElectronSelectionR2 #

inline void applyLooseIDElectronSelectionR2(
    std::vector< HEPUtils::Particle * > & electrons
)

Alias to allow non-const particle vectors.

function applyMediumIDElectronSelectionR2 #

inline void applyMediumIDElectronSelectionR2(
    std::vector< const HEPUtils::Particle * > & electrons
)

Note: Numbers digitised from Fig 3 of 13 TeV note (ATL-PHYS-PUB-2015-041)

Efficiency function for Loose ID electrons

function applyMediumIDElectronSelectionR2 #

inline void applyMediumIDElectronSelectionR2(
    std::vector< HEPUtils::Particle * > & electrons
)

Alias to allow non-const particle vectors.

function applyMediumIDElectronSelection #

inline void applyMediumIDElectronSelection(
    std::vector< const HEPUtils::Particle * > & electrons
)

Note: Numbers digitised from 8 TeV note (ATLAS-CONF-2014-032)

Efficiency function for Medium ID electrons

No delete is necessary, because this should only ever be applied to a copy of the Event Particle* vectors

TodoThis is an exact duplication of the below filtering code – split into a single util fn (in unnamed namespace?) when binned fns are static

function applyMediumIDElectronSelection #

inline void applyMediumIDElectronSelection(
    std::vector< HEPUtils::Particle * > & electrons
)

Alias to allow non-const particle vectors.

function applyTightIDElectronSelection #

inline void applyTightIDElectronSelection(
    std::vector< const HEPUtils::Particle * > & electrons
)

Note: Numbers digitised from 8 TeV note (ATLAS-CONF-2014-032)

Efficiency function for Tight ID electrons

No delete is necessary, because this should only ever be applied to a copy of the Event Particle* vectors

TodoThis is an exact duplication of the above filtering code – split into a single util fn (in unnamed namespace?) when binned fns are static

function applyTightIDElectronSelection #

inline void applyTightIDElectronSelection(
    std::vector< HEPUtils::Particle * > & electrons
)

Alias to allow non-const particle vectors.

function applyElectronIDEfficiency2019 #

inline void applyElectronIDEfficiency2019(
    std::vector< const HEPUtils::Particle * > & electrons,
    str operating_point
)

Note: These efficiencies are 1D efficiencies so only pT is used

Electron 2019 ID efficiency functions from https://arxiv.org/pdf/1902.04655.pdf

function applyElectronIsolationEfficiency2019 #

inline void applyElectronIsolationEfficiency2019(
    std::vector< const HEPUtils::Particle * > & electrons,
    str operating_point
)

Note: These efficiencies are 1D efficiencies so only pT is used

Electron 2019 Isolation efficiency functions from https://arxiv.org/pdf/1902.04655.pdf

Updated on 2022-08-03 at 12:58:03 +0000