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/*
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* CrossSections.h
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*
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* Created on: 29 Jul 2010
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* Author: kreczko
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*/
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#ifndef EVENTWEIGHTPROVIDER_H_
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#define EVENTWEIGHTPROVIDER_H_
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//https://twiki.cern.ch/twiki/bin/view/CMS/CrossSections_3XSeries#crosssections
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#include "DataTypes.h"
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#include <vector>
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#include <boost/array.hpp>
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#include <boost/shared_ptr.hpp>
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#include "TH1D.h"
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namespace BAT {
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namespace sevenTeV {
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extern boost::array<float, DataType::NUMBER_OF_DATA_TYPES> getXSections();
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}
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class EventWeightProvider{
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private:
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float lumiInInversePb;
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unsigned short tev;
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bool useSkimEff;
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boost::array<double, DataType::NUMBER_OF_DATA_TYPES> xsection;
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boost::shared_ptr<TH1D> estimatedPileUp;
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boost::array<double, 25> pileUpWeights;
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unsigned long numberOfEventsWithTooHighPileUp;
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// void defineNumberOfSkimmedEvents();
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void defineNumberOfProducedEvents();
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public:
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EventWeightProvider(float lumiInInversePb, unsigned short tev = 7, std::string pileUpEstimationFile = "pileUp.root");
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~EventWeightProvider();
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// void useSkimEfficiency(bool use);
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// float getExpectedNumberOfEvents(DataType::value type);
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double getWeight(DataType::value type);
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float reweightPileUp(unsigned int numberOfVertices);
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boost::shared_ptr<TH1D> getPileUpHistogram(std::string pileUpEstimationFile);
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void generate_flat10_weights();
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unsigned long getNumberOfEventsWithTooHighPileUp() const;
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boost::array<unsigned long, DataType::NUMBER_OF_DATA_TYPES> numberOfProcessedEvents;
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boost::array<unsigned long, DataType::NUMBER_OF_DATA_TYPES> numberOfPattplSkimEvents;
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boost::array<unsigned long, DataType::NUMBER_OF_DATA_TYPES> numberOfNtplSkimEvents;
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boost::array<unsigned long, DataType::NUMBER_OF_DATA_TYPES> numberOfElectronSkimEvents;
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boost::array<unsigned long, DataType::NUMBER_OF_DATA_TYPES> numberOfMuonSkimEvents;
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};
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}
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#endif /* EVENTWEIGHTPROVIDER_H_ */
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