EvtEtap2gpipi Class Reference

#include <EvtEtap2gpipi.hh>

Inheritance diagram for EvtEtap2gpipi:

Public Member Functions
	EvtEtap2gpipi ()
virtual	~EvtEtap2gpipi ()
void	getName (std::string &name)
EvtDecayBase *	clone ()
void	initProbMax ()
void	init ()
void	decay (EvtParticle *p)
double	AmplitudeSquare ()
double	AmplitudeSquare_p ()
EvtVector4R	GetDaugMomLab (int i)
EvtVector4R	GetDaugMomCM (int i)
EvtVector4R	GetDaugMomHel (int i)
int	GetNdaug ()
Public Member Functions inherited from EvtDecayIncoherent
void	makeDecay (EvtParticle *p)
virtual	~EvtDecayIncoherent ()
void	setDaughterSpinDensity (int daughter)
int	isDaughterSpinDensitySet (int daughter)
Public Member Functions inherited from EvtDecayBase
virtual void	getName (std::string &name)=0
virtual void	decay (EvtParticle *p)=0
virtual void	makeDecay (EvtParticle *p)=0
virtual EvtDecayBase *	clone ()=0
virtual void	init ()
virtual void	initProbMax ()
virtual std::string	commandName ()
virtual void	command (std::string cmd)
double	getProbMax (double prob)
double	resetProbMax (double prob)
	EvtDecayBase ()
virtual	~EvtDecayBase ()
virtual bool	matchingDecay (const EvtDecayBase &other) const
EvtId	getParentId ()
double	getBranchingFraction ()
void	disableCheckQ ()
void	checkQ ()
int	getNDaug ()
EvtId *	getDaugs ()
EvtId	getDaug (int i)
int	getNArg ()
int	getPHOTOS ()
void	setPHOTOS ()
void	setVerbose ()
void	setSummary ()
double *	getArgs ()
std::string *	getArgsStr ()
double	getArg (int j)
std::string	getArgStr (int j)
std::string	getModelName ()
int	getDSum ()
int	summary ()
int	verbose ()
void	saveDecayInfo (EvtId ipar, int ndaug, EvtId *daug, int narg, std::vector< std::string > &args, std::string name, double brfr)
void	printSummary ()
void	setProbMax (double prbmx)
void	noProbMax ()
void	checkNArg (int a1, int a2=-1, int a3=-1, int a4=-1)
void	checkNDaug (int d1, int d2=-1)
void	checkSpinParent (EvtSpinType::spintype sp)
void	checkSpinDaughter (int d1, EvtSpinType::spintype sp)
virtual int	nRealDaughters ()

Additional Inherited Members
Static Public Member Functions inherited from EvtDecayBase
static void	findMasses (EvtParticle *p, int ndaugs, EvtId daugs[10], double masses[10])
static void	findMass (EvtParticle *p)
static double	findMaxMass (EvtParticle *p)
Protected Member Functions inherited from EvtDecayBase
bool	daugsDecayedByParentModel ()
Protected Attributes inherited from EvtDecayBase
bool	_daugsDecayedByParentModel

Detailed Description

Definition at line 32 of file EvtEtap2gpipi.hh.

Constructor & Destructor Documentation

EvtEtap2gpipi()

EvtEtap2gpipi::EvtEtap2gpipi ( )

inline

Definition at line 36 of file EvtEtap2gpipi.hh.

{}

Referenced by clone().

~EvtEtap2gpipi()

EvtEtap2gpipi::~EvtEtap2gpipi ( )

virtual

Definition at line 45 of file EvtEtap2gpipi.cc.

{}

Member Function Documentation

AmplitudeSquare()

double EvtEtap2gpipi::AmplitudeSquare

(

)

Definition at line 164 of file EvtAmpsEtap2gpipi.cc.

                                     {
  EvtVector4R dp1=GetDaugMomCM(0);
  EvtVector4R dp2=GetDaugMomCM(1);
  EvtVector4R dp3=GetDaugMomCM(2);
  //cout<<"CMS:"<<(dp1+dp2+dp3).get(0)<<","<<(dp1+dp2+dp3).get(1)<<","<<(dp1+dp2+dp3).get(2)<<","<<(dp1+dp2+dp3).get(3)<<endl;
  //cout<<(dp1.get(0)+dp2.get(0)+dp3.get(0))<<endl;
  //cout<<(dp1.get(1)+dp2.get(1)+dp3.get(1))<<endl;
  //cout<<(dp1.get(2)+dp2.get(2)+dp3.get(2))<<endl;
  //cout<<(dp1.get(3)+dp2.get(3)+dp3.get(3))<<endl;
  angular_rho2 Rho2pipi(dp1,dp2,dp3,true);
  int xbd=getArg(0);
//  cout<<"amps(xbd) ="<<xbd<<endl;
  return Rho2pipi.amps(xbd);
}

Referenced by decay().

AmplitudeSquare_p()

double EvtEtap2gpipi::AmplitudeSquare_p

(

)

Definition at line 179 of file EvtAmpsEtap2gpipi.cc.

                                       {
  EvtVector4R dp1=GetDaugMomCM(0);
  EvtVector4R dp2=GetDaugMomCM(1);
  EvtVector4R dp3=GetDaugMomCM(2);
  angular_rho2 tmp(dp1,dp2,dp3,false);
  int xbd=getArg(0);
  return tmp.amps(xbd);
}

clone()

EvtDecayBase * EvtEtap2gpipi::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 53 of file EvtEtap2gpipi.cc.

                                  {
  return new EvtEtap2gpipi;
}

decay()

void EvtEtap2gpipi::decay ( EvtParticle *  p )

virtual

Implements EvtDecayBase.

Definition at line 74 of file EvtEtap2gpipi.cc.

                                         {
 
double amps,SamAmps,rd1;
 
// calculated the max amplitude square in 20000 events, is it enough larger?
 
   if(nrun==1){
     int ir,nd;
     for(ir=0;ir<=2000000;ir++){
  loop0:
       p->initializePhaseSpace(getNDaug(),getDaugs());
       int nd=p->getNDaug(),i;
       _nd=nd;
       for(i=0;i<=nd-1;i++){
          _p4Lab[i]=p->getDaug(i)->getP4Lab();
          _p4CM[i]=p->getDaug(i)->getP4();
       }
       amps=AmplitudeSquare();
       if(amps<0) goto loop0;
       if(amps>max_amps) max_amps=amps*1.01;
 
       if(nrun<2){//check decay card
        EvtId pid0= p->getId();//etaprime
        EvtId pid1= p->getDaug(0)->getId();//pi+
        EvtId pid2= p->getDaug(1)->getId();//pi-
        EvtId pid3= p->getDaug(2)->getId();//gamma
        if(pid0!= EvtPDL::getId("eta'")) { std::cout<<"Etap2gpipi need specify the parent as etaprime"<<std::endl;abort();}
        if(pid3!= EvtPDL::getId("gamma")) { std::cout<<"Etap2gpipi need specify the daughters  as pi+ pi- gamma"<<std::endl;abort();}
       }
 
       nrun++;
     }
  }
 
 
 
if(max_amps==0.0) {report(ERROR,"EvtGen")<<"The decay amplitude square should be positive number"<<endl;abort();}
 
 
loop:
  p->initializePhaseSpace(getNDaug(),getDaugs());
  int i;
  for(i=0;i<=p->getNDaug()-1;i++){
          _p4Lab[i]=p->getDaug(i)->getP4Lab(); 
          _p4CM[i]=p->getDaug(i)->getP4();
      }
   amps=AmplitudeSquare();
   if(amps < 0) goto loop;
   SamAmps=amps/max_amps;
   rd1=EvtRandom::Flat(0.0, 1.0);
  if(rd1>=SamAmps) goto loop;
  return ;
}

GetDaugMomCM()

EvtVector4R EvtEtap2gpipi::GetDaugMomCM ( int  i )

inline

Definition at line 53 of file EvtEtap2gpipi.hh.

{return _p4CM[i];}

Referenced by AmplitudeSquare(), and AmplitudeSquare_p().

GetDaugMomHel()

EvtVector4R EvtEtap2gpipi::GetDaugMomHel ( int  i )

inline

Definition at line 54 of file EvtEtap2gpipi.hh.

{return _p4Hel[i];}

GetDaugMomLab()

EvtVector4R EvtEtap2gpipi::GetDaugMomLab ( int  i )

inline

Definition at line 52 of file EvtEtap2gpipi.hh.

{return _p4Lab[i];}

getName()

void EvtEtap2gpipi::getName ( std::string &  name )

virtual

Implements EvtDecayBase.

Definition at line 47 of file EvtEtap2gpipi.cc.

                                                {
 
  model_name="Etap2gpipi";     
 
}

GetNdaug()

int EvtEtap2gpipi::GetNdaug ( )

inline

Definition at line 57 of file EvtEtap2gpipi.hh.

{return _nd;}   

init()

void EvtEtap2gpipi::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 58 of file EvtEtap2gpipi.cc.

                        {
  // check that there are 0 arguments
  checkNArg(1);
  checkNDaug(3);
  EvtSpinType::spintype parenttype = EvtPDL::getSpinType(getParentId());
}

initProbMax()

void EvtEtap2gpipi::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 66 of file EvtEtap2gpipi.cc.

                               {
  noProbMax();
}

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The documentation for this class was generated from the following files:

• EvtEtap2gpipi.hh
• EvtAmpsEtap2gpipi.cc
• EvtEtap2gpipi.cc