TauValidation.h

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#ifndef TauValidation_H
#define TauValidation_H

// framework & common header files
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/Run.h"

#include "DataFormats/Common/interface/Handle.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"

//DQM services
#include "DQMServices/Core/interface/DQMStore.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "DQMServices/Core/interface/MonitorElement.h"
#include "DQMServices/Core/interface/DQMEDAnalyzer.h"

#include "DataFormats/HepMCCandidate/interface/GenParticle.h"
#include "DataFormats/HepMCCandidate/interface/GenParticleFwd.h"

#include "SimGeneral/HepPDTRecord/interface/ParticleDataTable.h"
#include "TLorentzVector.h"

class TauValidation : public DQMEDAnalyzer
{
    public:
    // tau decays
        enum  {undetermined,
               electron,
               muon,
               pi,
               rho,
           a1,
               K,
           Kstar,
           pi1pi0,
               pinpi0,
               tripi,
               tripinpi0,
           stable};
    // tau mother particles 
    enum  {other,
           B,
           D,
           gamma,
           Z,
           W,
           HSM,
           H0,
           A0,
           Hpm};

    public:
    explicit TauValidation(const edm::ParameterSet&);
    ~TauValidation() override;
    void bookHistograms(DQMStore::IBooker &i, edm::Run const &, edm::EventSetup const &) override;
    void dqmBeginRun(const edm::Run& r, const edm::EventSetup& c) override;
    void analyze(edm::Event const&, edm::EventSetup const&) override;
    private:
    //    WeightManager wmanager_;

    int tauMother(const reco::GenParticle*, double weight);
    int tauProngs(const reco::GenParticle*, double weight);
    int tauDecayChannel(const reco::GenParticle* tau,int jak_id,unsigned int TauBitMask, double weight);
    int findMother(const reco::GenParticle*);
    bool isLastTauinChain(const reco::GenParticle* tau);
    void spinEffectsWHpm(const reco::GenParticle*,int,int,std::vector<const reco::GenParticle*> &part,double weight);
    void spinEffectsZH(const reco::GenParticle* boson, double weight);
    double leadingPionMomentum(const reco::GenParticle*, double weight);
    double visibleTauEnergy(const reco::GenParticle*);
    TLorentzVector leadingPionP4(const reco::GenParticle*);
    TLorentzVector motherP4(const reco::GenParticle*);
    void photons(const reco::GenParticle*, double weight);
    void findTauList(const reco::GenParticle* tau,std::vector<const reco::GenParticle*> &TauList);
    void findFSRandBrem(const reco::GenParticle* p, bool doBrem, std::vector<const reco::GenParticle*> &ListofFSR,
               std::vector<const reco::GenParticle*> &ListofBrem);
    void FindPhotosFSR(const reco::GenParticle* p,std::vector<const reco::GenParticle*> &ListofFSR,double &BosonScale);
    const reco::GenParticle* GetMother(const reco::GenParticle* tau);
    const std::vector<const reco::GenParticle*> GetMothers(const reco::GenParticle* boson);
    double Zstoa(double zs);
    void countParticles(const reco::GenParticle* p,int &allCount, int &eCount, int &muCount,
                int &pi0Count,int &piCount,int &rhoCount,int &a1Count,int &KCount,int &KstarCount);

        edm::InputTag genparticleCollection_;

    edm::ESHandle<HepPDT::ParticleDataTable> fPDGTable ;
  
        MonitorElement *nTaus, *nPrimeTaus;
    MonitorElement *TauPt, *TauEta, *TauPhi, *TauProngs, *TauDecayChannels, *TauMothers, 
      *TauSpinEffectsW_X, *TauSpinEffectsW_UpsilonRho, *TauSpinEffectsW_UpsilonA1,*TauSpinEffectsW_eX,*TauSpinEffectsW_muX,
      *TauSpinEffectsHpm_X, *TauSpinEffectsHpm_UpsilonRho, *TauSpinEffectsHpm_UpsilonA1,*TauSpinEffectsHpm_eX,*TauSpinEffectsHpm_muX, 
      *TauSpinEffectsZ_MVis, *TauSpinEffectsZ_Zs, *TauSpinEffectsZ_Xf, *TauSpinEffectsZ_Xb,
      *TauSpinEffectsZ_X50to75,*TauSpinEffectsZ_X75to88,*TauSpinEffectsZ_X88to100,*TauSpinEffectsZ_X100to120,*TauSpinEffectsZ_X120UP,
      *TauSpinEffectsZ_eX, *TauSpinEffectsZ_muX, *TauSpinEffectsZ_X, *TauSpinEffectsH_X,
      *TauSpinEffectsH_MVis, *TauSpinEffectsH_Zs, *TauSpinEffectsH_Xf, *TauSpinEffectsH_Xb,
      *TauSpinEffectsH_eX, *TauSpinEffectsH_muX, *TauSpinEffectsH_rhorhoAcoplanarityplus,  *TauSpinEffectsH_rhorhoAcoplanarityminus,
      *TauBremPhotonsN,*TauBremPhotonsPt,*TauBremPhotonsPtSum,*TauFSRPhotonsN,*TauFSRPhotonsPt,*TauFSRPhotonsPtSum,
      *TauSpinEffectsH_pipiAcoplanarity,*TauSpinEffectsH_pipiAcollinearity,*TauSpinEffectsH_pipiAcollinearityzoom, *DecayLength,
      *LifeTime;

    unsigned int NMODEID;
    MonitorElement *MODEID;
    std::vector<std::vector<MonitorElement *> > MODEInvMass;

    int zsbins;
    double zsmin,zsmax;

    edm::EDGetTokenT<reco::GenParticleCollection> genparticleCollectionToken_;
};

#endif