IDApplier

Description

Applies the photon ID selection and corrections (scale factors)

In addition, vetoes photons in the barrel-endcap transition region (1.44 < |scEta| < 1.57).

This class modifies the weights of the reconstructed photons to apply the efficiency correction. Scale factors are taken from a ROOT file in the format provided by Egamma for UL scale factors.

The scale factors are retrieved from a histogram called EGamma_SF2D assumed to contain the scale factors in bins of supercluster eta and pT.

Inheritance diagram for IDApplier:

Collaboration diagram for IDApplier:

Public Member Functions
	IDApplier (const fs::path &filePath, const string &ID, bool correction, bool uncertainties)
Public Member Functions inherited from GenericSFApplier< DAS::RecPhoton >
	GenericSFApplier (const std::filesystem::path &filePath, bool correction, bool uncertainties)
virtual	~GenericSFApplier () noexcept=default
void	operator() (DAS::RecPhoton &object, const Context &... ctx) const
void	operator() (std::vector< DAS::RecPhoton > &objects, const Context &... ctx) const
std::vector< std::string >	weightNames () const

Protected Member Functions
bool	passes (const RecPhoton &photon) const override
int	binIndex (const RecPhoton &photon, const std::unique_ptr< TH1 > &hist) const override
Protected Member Functions inherited from GenericSFApplier< DAS::RecPhoton >
void	loadNominal (const std::string &histPath)
void	loadBinWiseUnc (const std::string &name, const std::string &histPath, Interpretation intp=UseBinContent)
void	loadGlobalUnc (const std::string &name, const std::string &histPath, Interpretation intp=UseBinContent)
virtual bool	passes (const DAS::RecPhoton &obj, const Context &... ctx) const=0
virtual int	binIndex (const DAS::RecPhoton &obj, const Context &... ctx, const std::unique_ptr< TH1 > &hist) const=0

Static Private Member Functions
static RecPhoton::Identification	getMask (const string &ID)

Private Attributes
unsigned	m_mask

Additional Inherited Members
Protected Types inherited from GenericSFApplier< DAS::RecPhoton >
enum	Interpretation

Constructor & Destructor Documentation

IDApplier()

IDApplier ( const fs::path &  filePath, const string &  ID, bool  correction, bool  uncertainties  )

inline

        : GenericSFApplier(filePath, correction, uncertainties)
        , m_mask(getMask(ID))
    {
        loadNominal("EGamma_SF2D");
        loadBinWiseUnc("ID_statData",       "statData");
        loadBinWiseUnc("ID_statMC",         "statMC");
        loadGlobalUnc("ID_altBkgModel",     "altBkgModel");
        loadGlobalUnc("ID_altSignalModel",  "altSignalModel");
        loadGlobalUnc("ID_altMCEff",        "altMCEff");
        loadGlobalUnc("ID_altTagSelection", "altTagSelection");
 
        cout << "Initialisation of " << __func__ << " done" << endl;
    }

Member Function Documentation

binIndex()

int binIndex ( const RecPhoton &  photon, const std::unique_ptr< TH1 > &  hist  ) const

inlineoverrideprotected

    {
        // - 1 to ensure we fall within the bin
        const float maxpt = hist->GetYaxis()->GetXmax() - 1;
        return hist->FindBin(photon.scEta, min(photon.p4.Pt(), maxpt));
    }

getMask()

static RecPhoton::Identification getMask ( const string &  ID )

inlinestaticprivate

Gets the enum value for a photon ID name.

    {
        if (ID == "Loose")
            return RecPhoton::CutBasedLoose;
        else if (ID == "Medium")
            return RecPhoton::CutBasedMedium;
        else if (ID == "Tight")
            return RecPhoton::CutBasedTight;
        else if (ID == "MVA80")
            return RecPhoton::MVAWorkingPoint80;
        else if (ID == "MVA90")
            return RecPhoton::MVAWorkingPoint90;
 
        BOOST_THROW_EXCEPTION( invalid_argument(ID + " is not recognised.") );
    }

passes()

bool passes ( const RecPhoton &  photon ) const

inlineoverrideprotected

    {
        const bool passesID = (m_mask & photon.selectors) == m_mask;
        const auto absScEta = abs(photon.scEta);
        return passesID && (absScEta < 1.44 || absScEta > 1.57);
    }

Member Data Documentation

m_mask

unsigned m_mask

private

Mask to apply to the photon's selectors.

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The documentation for this class was generated from the following file:

• /builds/cms-analysis/general/DasAnalysisSystem/Core/Installer/Core/Photons/bin/applyPhotonID.cc