EvtSVPHelAmp Class Reference

#include <EvtSVPHelAmp.hh>

Inheritance diagram for EvtSVPHelAmp:

Public Member Functions
	EvtSVPHelAmp ()
virtual	~EvtSVPHelAmp ()
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 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 EvtDecayAmp
EvtAmp	_amp2
Protected Attributes inherited from EvtDecayBase
bool	_daugsDecayedByParentModel

Detailed Description

Definition at line 35 of file EvtSVPHelAmp.hh.

Constructor & Destructor Documentation

EvtSVPHelAmp()

EvtSVPHelAmp::EvtSVPHelAmp ( )

inline

Definition at line 39 of file EvtSVPHelAmp.hh.

{}

Referenced by clone().

~EvtSVPHelAmp()

EvtSVPHelAmp::~EvtSVPHelAmp ( )

virtual

Definition at line 35 of file EvtSVPHelAmp.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtSVPHelAmp::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 44 of file EvtSVPHelAmp.cc.

                                 {
 
  return new EvtSVPHelAmp;
 
}

decay()

void EvtSVPHelAmp::decay ( EvtParticle *  p )

virtual

Implements EvtDecayBase.

Definition at line 70 of file EvtSVPHelAmp.cc.

                                        {
 
  EvtComplex hp(getArg(0)*cos(getArg(1)),getArg(0)*sin(getArg(1)));
  EvtComplex hm(getArg(2)*cos(getArg(3)),getArg(2)*sin(getArg(3)));
 
 
  //  Routine to decay a vector into a vector and scalar.  Started
  //  by ryd on Oct 17, 1996.
 
      
  // This routine is adopted from EvtSVVHel and since there is
  // a photon that can not have helicity 0 this is put in by 
  // setting the h0 amplitude to 0.
  EvtComplex h0=EvtComplex(0.0,0.0);
 
  EvtParticle *v1,*ph;
 
  p->initializePhaseSpace(getNDaug(),getDaugs());
  v1 = p->getDaug(0);
  ph = p->getDaug(1);
  EvtVector4R momv1 = v1->getP4();
  EvtVector4R momph = ph->getP4();
 
  EvtTensor4C d,g;
 
  g.setdiag(1.0,-1.0,-1.0,-1.0);
 
  EvtVector4R v,vp;
 
  v=momv1/momv1.d3mag();
  vp=(momv1+momph)/(momv1+momph).mass();   
 
  d=((1.0/sqrt(3.0))*(h0-(hp+hm))*(-1.0/sqrt(3.0)))*g+
    ((1.0/sqrt(2.0))*(hp-hm)*EvtComplex(0.0,1.0)*(sqrt(1.0/2.0)))*dual(directProd(v,vp))+
    (sqrt(2.0/3.0)*(h0+0.5*(hp+hm))*sqrt(3.0/2.0))*(directProd(v,v)+(1.0/3.0)*g);
 
  EvtVector4C ep0,ep1,ep2;  
  
  ep0=d.cont1(v1->eps(0).conj());
  ep1=d.cont1(v1->eps(1).conj());
  ep2=d.cont1(v1->eps(2).conj());
 
  EvtVector4C ep20,ep21,ep22;
 
  ep20=ph->epsParentPhoton(0).conj();  
  ep21=ph->epsParentPhoton(1).conj();  
 
  vertex(0,0,ep0*ep20);
  vertex(0,1,ep0*ep21);
  
  vertex(1,0,ep1*ep20);
  vertex(1,1,ep1*ep21);
   
  vertex(2,0,ep2*ep20);
  vertex(2,1,ep2*ep21);
 
                 
  return ;
 
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 37 of file EvtSVPHelAmp.cc.

                                               {
 
  model_name="SVP_HELAMP";     
 
}

init()

void EvtSVPHelAmp::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 57 of file EvtSVPHelAmp.cc.

                       {
 
  // check that there are 4 arguments
  checkNArg(4);
  checkNDaug(2);
 
  checkSpinParent(EvtSpinType::SCALAR);
 
  checkSpinDaughter(0,EvtSpinType::VECTOR);
  checkSpinDaughter(1,EvtSpinType::PHOTON);
 
}

initProbMax()

void EvtSVPHelAmp::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 50 of file EvtSVPHelAmp.cc.

                              {
 
  setProbMax(getArg(0)*getArg(0)+getArg(2)*getArg(2));
 
}

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

• EvtSVPHelAmp.hh
• EvtSVPHelAmp.cc