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auterman |
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#include "FWCore/Framework/interface/EDProducer.h"
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#include "FWCore/ParameterSet/interface/ParameterSetfwd.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include <algorithm>
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#include "PhysicsTools/Utilities/interface/Math.h"
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template <typename T1, typename C2>
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class PtIsolationAlgo {
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public:
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typedef double value_type;
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PtIsolationAlgo( const edm::ParameterSet & );
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~PtIsolationAlgo();
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double operator()(const T1 &, const C2 &, const edm::EventSetup &) const;
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private:
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double dRMin_, dRMax_, dzMax_;
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};
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template <typename T1, typename C2>
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PtIsolationAlgo<T1,C2>::PtIsolationAlgo( const edm::ParameterSet & cfg ) :
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dRMin_( cfg.template getParameter<double>( "dRMin" ) ),
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dRMax_( cfg.template getParameter<double>( "dRMax" ) ),
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dzMax_( cfg.template getParameter<double>( "dzMax" ) ) {
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}
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template <typename T1, typename C2>
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PtIsolationAlgo<T1,C2>::~PtIsolationAlgo() {
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}
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template <typename T1, typename C2>
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double PtIsolationAlgo<T1,C2>::operator()(const T1 & cand, const C2 & elements, const edm::EventSetup &) const {
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double ptSum = 0;
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for( typename C2::const_iterator elem = elements.begin(); elem != elements.end(); ++ elem ) {
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double dz = fabs( elem->vz() - cand.vz() );
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//double dR = deltaR( elem->p4(), cand.p4() );
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double dR = deltaR( elem->eta(), elem->phi(), cand.eta(), cand.phi() );
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if ( dz < dzMax_ && dR < dRMax_ && dR > dRMin_ ) {
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ptSum += elem->pt();
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}
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}
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return ptSum;
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}
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