JetClusterMomentsTool.h

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/*
  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
*/
 
// JetClusterMomentsTool.h
 
#ifndef JETMOMENTTOOLS_JETCLUSTERMOMENTSTOOL_H
#define JETMOMENTTOOLS_JETCLUSTERMOMENTSTOOL_H
 
 
#include "AsgTools/AsgTool.h"
#include "AsgTools/PropertyWrapper.h"
#include "JetInterface/IJetDecorator.h"
#include "AsgDataHandles/WriteDecorHandleKey.h"
 
#include "xAODCaloEvent/CaloCluster.h"
 
#include <string>
 
 
class JetClusterMomentsTool : public asg::AsgTool,
                              virtual public IJetDecorator{
    ASG_TOOL_CLASS(JetClusterMomentsTool,IJetDecorator)
    public:
        // Constructor from tool name
        JetClusterMomentsTool(const std::string& name);
 
        virtual StatusCode decorate(const xAOD::JetContainer& jets) const override;
        virtual StatusCode initialize() override;
 
    private:
        Gaudi::Property<std::string> m_jetContainerName{this, "JetContainer", "", "SG key for the input jet container"};
 
        // SG keys for the moment decorations.
        // If configured to be an empty string, that decoration will not be created.
        SG::WriteDecorHandleKey<xAOD::JetContainer> m_clsPtKey{this, "PtKey", "LeadingClusterPt", "SG key for pt decoration"};
        SG::WriteDecorHandleKey<xAOD::JetContainer> m_clsSecondLambdaKey{this, "SecondLambdaKey", "LeadingClusterSecondLambda", "SG key for second lambda decoration"};
        SG::WriteDecorHandleKey<xAOD::JetContainer> m_clsCenterLambdaKey{this, "CenterLambdaKey", "LeadingClusterCenterLambda", "SG key for center lambda decoration"};
        SG::WriteDecorHandleKey<xAOD::JetContainer> m_clsSecondRKey{this, "SecondRKey", "LeadingClusterSecondR", "SG key for second R decoration"};
 
        // Find cluster with highest energy, or return NULL if unsuccessful
        const xAOD::CaloCluster* findLeadingCluster(const xAOD::Jet& jet) const;
        // Retrieve a moment from cluster
        float getMoment(const xAOD::CaloCluster* cluster, const xAOD::CaloCluster::MomentType& momentType) const;
};
 
#endif