EvtJpipi Class Reference

#include <EvtJpipi.hh>

Inheritance diagram for EvtJpipi:

Public Member Functions
	EvtJpipi ()
virtual	~EvtJpipi ()
void	getName (std::string &name)
EvtDecayBase *	clone ()
void	decay (EvtParticle *p)
void	init ()
void	initProbMax ()
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 28 of file EvtJpipi.hh.

Constructor & Destructor Documentation

EvtJpipi()

EvtJpipi::EvtJpipi ( )

inline

Definition at line 32 of file EvtJpipi.hh.

{}

Referenced by clone().

~EvtJpipi()

EvtJpipi::~EvtJpipi ( )

virtual

Definition at line 34 of file EvtJpipi.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtJpipi::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 43 of file EvtJpipi.cc.

                             {
 
  return new EvtJpipi;
 
}

decay()

void EvtJpipi::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 82 of file EvtJpipi.cc.

                                   {
 
  p->initializePhaseSpace(getNDaug(),getDaugs());
 
  EvtParticle *v,*s1,*s2;
  
  v=p->getDaug(0);
  s1=p->getDaug(1);
  s2=p->getDaug(2);
 
//  Put phase space results into the daughters.
  
  EvtVector4C ep0,ep1,ep2;  
  
  ep0=p->eps(0);
  ep1=p->eps(1);
  ep2=p->eps(2);
 
//  double fac=(s1->getP4()+s2->getP4()).mass2()-4*s1->mass()*s2->mass();
  double fac1=(s1->getP4()+s2->getP4()).mass2()-2*s1->mass()*s2->mass();
  double fac=0.3*fac1-2*0.11*(s1->getP4()).get(0)*(s2->getP4()).get(0);
 
  vertex(0,0,fac*(ep0*v->epsParent(0).conj()));
  vertex(0,1,fac*(ep0*v->epsParent(1).conj()));
  vertex(0,2,fac*(ep0*v->epsParent(2).conj()));
  
  vertex(1,0,fac*(ep1*v->epsParent(0).conj()));
  vertex(1,1,fac*(ep1*v->epsParent(1).conj()));
  vertex(1,2,fac*(ep1*v->epsParent(2).conj()));
  
  vertex(2,0,fac*(ep2*v->epsParent(0).conj()));
  vertex(2,1,fac*(ep2*v->epsParent(1).conj()));
  vertex(2,2,fac*(ep2*v->epsParent(2).conj()));
 
  return ;
 
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 36 of file EvtJpipi.cc.

                                           {
 
  model_name="JPIPI";     
 
}

init()

void EvtJpipi::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 49 of file EvtJpipi.cc.

                   {
 
  static EvtId PIP=EvtPDL::getId("pi+");
  static EvtId PIM=EvtPDL::getId("pi-");
  static EvtId PI0=EvtPDL::getId("pi0");
 
  // check that there are 0 arguments
  checkNArg(0);
  checkNDaug(3);
 
  checkSpinParent(EvtSpinType::VECTOR);
  checkSpinDaughter(0,EvtSpinType::VECTOR);
 
 
 
  if ((!(getDaug(1)==PIP&&getDaug(2)==PIM))&&
      (!(getDaug(1)==PI0&&getDaug(2)==PI0))) {
    report(ERROR,"EvtGen") << "EvtJpipi generator expected "
                           << " pi+ and pi- (or pi0 and pi0) "
               << "as 2nd and 3rd daughter. "<<endl;
    report(ERROR,"EvtGen") << "Will terminate execution!"<<endl;
    ::abort();
  }
 
}

initProbMax()

void EvtJpipi::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 75 of file EvtJpipi.cc.

                           {
 
  //Hard coded... should not be hard to calculate...
 setProbMax(0.019);
 
}      

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

• EvtJpipi.hh
• EvtJpipi.cc