EvtBTo3piCP Class Reference

#include <EvtBTo3piCP.hh>

Inheritance diagram for EvtBTo3piCP:

Public Member Functions
	EvtBTo3piCP ()
virtual	~EvtBTo3piCP ()
void	getName (std::string &name)
EvtDecayBase *	clone ()
void	init ()
void	initProbMax ()
void	decay (EvtParticle *p)
Public Member Functions inherited from EvtDecayAmp
void	makeDecay (EvtParticle *p)
void	setWeight (double weight)
void	vertex (const EvtComplex &amp)
void	vertex (int i1, const EvtComplex &amp)
void	vertex (int i1, int i2, const EvtComplex &amp)
void	vertex (int i1, int i2, int i3, const EvtComplex &amp)
void	vertex (int *i1, const EvtComplex &amp)
virtual	~EvtDecayAmp ()
Public Member Functions inherited from EvtDecayBase
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 EvtDecayAmp
EvtAmp	_amp2
Protected Attributes inherited from EvtDecayBase
bool	_daugsDecayedByParentModel

Detailed Description

Definition at line 30 of file EvtBTo3piCP.hh.

Constructor & Destructor Documentation

EvtBTo3piCP()

EvtBTo3piCP::EvtBTo3piCP ( )

inline

Definition at line 34 of file EvtBTo3piCP.hh.

{}

Referenced by clone().

~EvtBTo3piCP()

EvtBTo3piCP::~EvtBTo3piCP ( )

virtual

Definition at line 40 of file EvtBTo3piCP.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtBTo3piCP::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 50 of file EvtBTo3piCP.cc.

                                {
 
  return new EvtBTo3piCP;
 
}

decay()

void EvtBTo3piCP::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 77 of file EvtBTo3piCP.cc.

                                      {
 
  //added by Lange Jan4,2000
  static EvtId B0=EvtPDL::getId("B0");
  static EvtId B0B=EvtPDL::getId("anti-B0");
 
  double t;
  EvtId other_b;
 
  EvtCPUtil::OtherB(p,t,other_b);
 
  EvtParticle *pip,*pim,*pi0;
 
  p->makeDaughters(getNDaug(),getDaugs());
 
  //  p->init_daug(SCALAR,&pip,SCALAR,&pim,SCALAR,&pi0);
  pip=p->getDaug(0);
  pim=p->getDaug(1);
  pi0=p->getDaug(2);
 
  EvtVector4R p4[3];
 
  double dm=getArg(0);
  double alpha=getArg(1);
  int iset;
 
  static int first=1;
 
  if (first==1) {
    iset=10000;
    first=0;
  }
  else{
    iset=0;
  }
 
  double p4piplus[4],p4piminus[4],p4gamm1[4],p4gamm2[4]; 
 
  double realA,imgA,realbarA,imgbarA;
 
  evt3pions_(&alpha,&iset,p4piplus,p4piminus,p4gamm1,p4gamm2,
         &realA,&imgA,&realbarA,&imgbarA);
 
  p4[0].set(p4piplus[3],p4piplus[0],p4piplus[1],p4piplus[2]);
  p4[1].set(p4piminus[3],p4piminus[0],p4piminus[1],p4piminus[2]);
  p4[2].set(p4gamm1[3]+p4gamm2[3],p4gamm1[0]+p4gamm2[0],
        p4gamm1[1]+p4gamm2[1],p4gamm1[2]+p4gamm2[2]);
 
  if (pip->getId()==EvtPDL::getId("pi+")) {
    pip->init( getDaug(0), p4[0] );
    pim->init( getDaug(1), p4[1] );
  }
  else {
    pip->init( getDaug(0), p4[1] );
    pim->init( getDaug(1), p4[0] );  
  }
 
   pi0->init( getDaug(2), p4[2] );
   
   EvtComplex amp;
 
   EvtComplex A(realA,imgA);
   EvtComplex Abar(realbarA,imgbarA);
 
   if (other_b==B0B){
     amp=A*cos(dm*t/(2*EvtConst::c))+
       EvtComplex(0.,1.)*Abar*sin(dm*t/(2*EvtConst::c));
   }
   if (other_b==B0){
     amp=Abar*cos(dm*t/(2*EvtConst::c))+
       EvtComplex(0.,1.)*A*sin(dm*t/(2*EvtConst::c));
   }
 
   vertex(amp);
 
  return ;
}

getName()

void EvtBTo3piCP::getName ( std::string & name )

virtual

Implements EvtDecayBase.

Definition at line 43 of file EvtBTo3piCP.cc.

                                              {
 
  model_name="BTO3PI_CP";     
 
}

init()

void EvtBTo3piCP::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 56 of file EvtBTo3piCP.cc.

                      {
 
  // check that there are 2 arguments
  checkNArg(2);
  checkNDaug(3);
 
  checkSpinParent(EvtSpinType::SCALAR);
 
  checkSpinDaughter(0,EvtSpinType::SCALAR);
  checkSpinDaughter(1,EvtSpinType::SCALAR);
  checkSpinDaughter(2,EvtSpinType::SCALAR);
}

initProbMax()

void EvtBTo3piCP::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 71 of file EvtBTo3piCP.cc.

                             {
 
  setProbMax(1.5);
 
}

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

• EvtBTo3piCP.hh
• EvtBTo3piCP.cc