TauDecay_CMSSW Class Reference

#include <TauDecay_CMSSW.h>

Inheritance diagram for TauDecay_CMSSW:

Public Member Functions
bool	AnalyzeTau (HepMC::GenParticle *Tau, unsigned int &MODE_ID, unsigned int &TauBitMask, bool dores=true, bool dopi0=true)
std::vector< unsigned int >	Get_MotherIdx ()
std::vector< HepMC::GenParticle * >	Get_TauDecayProducts ()
	TauDecay_CMSSW ()
	~TauDecay_CMSSW ()
Public Member Functions inherited from TauDecay
void	ClassifyDecayMode (unsigned int &MODE_ID, unsigned int &TauBitMask)
bool	hasResonance (unsigned int &TauBitMask, int pdgid)
bool	isTauFinalStateParticle (int pdgid)
bool	isTauParticleCounter (int pdgid)
bool	isTauResonanceCounter (int pdgid)
unsigned int	nPi0 (unsigned int &TauBitMask)
unsigned int	nProng (unsigned int &TauBitMask)
void	Reset ()
	TauDecay ()
	~TauDecay ()

Private Member Functions
void	AddPi0Info (HepMC::GenParticle *Particle, unsigned int midx)
void	Analyze (HepMC::GenParticle *Particle, unsigned int midx, bool dores, bool dopi0)

Private Attributes
unsigned int	MODE_ID
std::vector< unsigned int >	MotherIdx
unsigned int	TauBitMask
std::vector< HepMC::GenParticle * >	TauDecayProducts

Additional Inherited Members
Public Types inherited from TauDecay
enum	MODE {   MODE_UNKNOWN = 0, MODE_ELECTRON, MODE_MUON, MODE_PION,   MODE_PIPI0, MODE_3PI, MODE_PI2PI0, MODE_KAON,   MODE_K0PI, MODE_KPI0, MODE_3PIPI0, MODE_PI3PI0,   MODE_3PI2PI0, MODE_5PI, MODE_5PIPI0, MODE_3PI3PI0,   MODE_KPIK, MODE_K0BK0PI, MODE_KK0BPI0, MODE_K2PI0,   MODE_KPIPI, MODE_PIK0PI0, MODE_ETAPIPI0, MODE_PIPI0GAM,   MODE_KK0B, MODE_PI4PI0, MODE_3PIETA, MODE_PI2PI0ETA,   MODE_PI2PI0OMEGA, MODE_3PIOMEGA, MODE_KOMEGA, MODE_K3PI0,   MODE_K2PIPI0, MODE_KETA, MODE_K0PI2PI0, MODE_K03PI,   MODE_2K0PIPI0, MODE_KPIKPI0, NMODEID }
enum	TauDecayStructure {   other = 0, OneProng = 1, ThreeProng = 2, FiveProng = 4,   OnePi0 = 8, TwoPi0 = 32, ThreePi0 = 64, Res_a1_pm = 128,   Res_a1_0 = 256, Res_rho_pm = 512, Res_rho_0 = 1024, Res_eta = 2048,   Res_omega = 4096, Res_Kstar_pm = 8192, Res_Kstar_0 = 16384, KS0_to_pipi = 32768 }
Static Public Member Functions inherited from TauDecay
static std::string	DecayMode (unsigned int &MODE_ID)

Detailed Description

Definition at line 30 of file TauDecay_CMSSW.h.

Constructor & Destructor Documentation

TauDecay_CMSSW()

TauDecay_CMSSW::TauDecay_CMSSW

(

)

Definition at line 7 of file TauDecay_CMSSW.cc.

: TauDecay() {}

~TauDecay_CMSSW()

TauDecay_CMSSW::~TauDecay_CMSSW

(

)

Definition at line 9 of file TauDecay_CMSSW.cc.

{}

Member Function Documentation

AddPi0Info()

void TauDecay_CMSSW::AddPi0Info ( HepMC::GenParticle *  Particle, unsigned int  midx  )

private

Definition at line 56 of file TauDecay_CMSSW.cc.

                                                                             {
  if (Particle->status() == 1) {
    TauDecayProducts.push_back(Particle);
    MotherIdx.push_back(midx);
    return;
  }
  HepMC::GenVertex::particle_iterator des;
  for (des = Particle->end_vertex()->particles_begin(HepMC::children);
       des != Particle->end_vertex()->particles_end(HepMC::children);
       ++des) {
    AddPi0Info((*des), midx);
  }
}

References class-composition::children, MotherIdx, and TauDecayProducts.

Analyze()

void TauDecay_CMSSW::Analyze ( HepMC::GenParticle *  Particle, unsigned int  midx, bool  dores, bool  dopi0  )

private

Definition at line 32 of file TauDecay_CMSSW.cc.

                                                                                                  {
  unsigned int pdgid = abs(Particle->pdg_id());
  isTauResonanceCounter(pdgid);
  if (isTauFinalStateParticle(pdgid)) {
    if (!isTauParticleCounter(pdgid))
      std::cout << "TauDecay_CMSSW::Analyze WARNING: Unknow Final State Particle in Tau Decay... " << pdgid
                << std::endl;
    TauDecayProducts.push_back(Particle);
    MotherIdx.push_back(midx);
    return;
  }
  HepMC::GenVertex::particle_iterator des;
  if (Particle->end_vertex()) {
    for (des = Particle->end_vertex()->particles_begin(HepMC::children);
         des != Particle->end_vertex()->particles_end(HepMC::children) &&
         Particle->end_vertex()->particles_out_size() > 0;
         ++des) {
      Analyze((*des), midx, dores, dopi0);
    }
  } else {
    std::cout << "Unstable particle that is undecayed in Tau decay tree. PDG ID: " << pdgid << std::endl;
  }
}

References funct::abs(), class-composition::children, gather_cfg::cout, TauDecay::isTauFinalStateParticle(), TauDecay::isTauParticleCounter(), TauDecay::isTauResonanceCounter(), MotherIdx, EgammaValidation_cff::pdgid, and TauDecayProducts.

Referenced by AnalyzeTau().

AnalyzeTau()

bool TauDecay_CMSSW::AnalyzeTau	(	HepMC::GenParticle *	Tau,
		unsigned int &	MODE_ID,
		unsigned int &	TauBitMask,
		bool	dores = true,
		bool	dopi0 = true
	)

Definition at line 11 of file TauDecay_CMSSW.cc.

                                                                                                    {
  Reset();
  MotherIdx.clear();
  TauDecayProducts.clear();
  if (abs(Tau->pdg_id()) == PdtPdgMini::tau_minus) {  // check that it is a tau
    unsigned int Tauidx = TauDecayProducts.size();
    HepMC::GenVertex::particle_iterator des;
    if (Tau->end_vertex()) {
      for (des = Tau->end_vertex()->particles_begin(HepMC::children);
           des != Tau->end_vertex()->particles_end(HepMC::children);
           ++des) {
        Analyze((*des), Tauidx, dores, dopi0);
      }
      ClassifyDecayMode(MODE_ID, TauBitMask);
      return true;
    }
  }
  return false;
}

References funct::abs(), Analyze(), class-composition::children, TauDecay::ClassifyDecayMode(), MODE_ID, MotherIdx, TauDecay::Reset(), PdtPdgMini::tau_minus, TauBitMask, and TauDecayProducts.

Get_MotherIdx()

std::vector<unsigned int> TauDecay_CMSSW::Get_MotherIdx ( )

inline

Definition at line 40 of file TauDecay_CMSSW.h.

{ return MotherIdx; }

References MotherIdx.

Get_TauDecayProducts()

std::vector<HepMC::GenParticle *> TauDecay_CMSSW::Get_TauDecayProducts ( )

inline

Definition at line 39 of file TauDecay_CMSSW.h.

{ return TauDecayProducts; }

References TauDecayProducts.

Member Data Documentation

MODE_ID

unsigned int TauDecay_CMSSW::MODE_ID

private

Definition at line 49 of file TauDecay_CMSSW.h.

Referenced by AnalyzeTau().

MotherIdx

std::vector<unsigned int> TauDecay_CMSSW::MotherIdx

private

Definition at line 48 of file TauDecay_CMSSW.h.

Referenced by AddPi0Info(), Analyze(), AnalyzeTau(), and Get_MotherIdx().

TauBitMask

unsigned int TauDecay_CMSSW::TauBitMask

private

Definition at line 49 of file TauDecay_CMSSW.h.

Referenced by AnalyzeTau().

TauDecayProducts

std::vector<HepMC::GenParticle *> TauDecay_CMSSW::TauDecayProducts

private

Definition at line 47 of file TauDecay_CMSSW.h.

Referenced by AddPi0Info(), Analyze(), AnalyzeTau(), and Get_TauDecayProducts().