EvtHelPPJ Class Reference

#include <EvtHelPPJ.hh>

Inheritance diagram for EvtHelPPJ:

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

Constructor & Destructor Documentation

EvtHelPPJ()

EvtHelPPJ::EvtHelPPJ ( )

inline

Definition at line 31 of file EvtHelPPJ.hh.

{}

Referenced by clone().

~EvtHelPPJ()

EvtHelPPJ::~EvtHelPPJ ( )

virtual

Definition at line 38 of file EvtHelPPJ.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtHelPPJ::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 42 of file EvtHelPPJ.cc.

{ return new EvtHelPPJ; }

decay()

void EvtHelPPJ::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 57 of file EvtHelPPJ.cc.

                                      {
 
  p->initializePhaseSpace( getNDaug(), getDaugs() );
 
  EvtParticle *l1, *l2, *l3;
  l1               = p->getDaug( 0 );
  l2               = p->getDaug( 1 );
  l3               = p->getDaug( 2 );
  EvtVector4R VP4  = l1->getP4(); // Vector Daughter
  EvtVector4R S1P4 = l2->getP4(); // Scalar Daughter
  EvtVector4R S2P4 = l3->getP4(); // Scalar Daughter
  EvtVector4R PRP4 = p->getP4();  // Parent Momentum
  PRP4.set( 1, 0 );
  PRP4.set( 2, 0 );
  PRP4.set( 3, 0 );
 
  double mpipi2 = ( S1P4 + S2P4 ).mass2();
  double e1pi   = S1P4.get( 0 );
  double e2pi   = S2P4.get( 0 );
  double g0     = 0.3;
  double g1     = -0.11;
  double mpi    = 0.1396;
  double mpsi   = 3.097;
  double epsi   = VP4.get( 0 );
  double amp1   = ( mpipi2 - 2 * mpi * mpi ) * g0 / 2 + g1 * e1pi * e2pi;
  double amp0   = amp1 * epsi / mpsi;
 
  EvtHelSys angles( PRP4, VP4 ); // using helicity sys.angles
  double    tht   = angles.getHelAng( 1 );
  double    phi   = angles.getHelAng( 2 );
  double    gamma = 0;
 
  vertex( 0, 0, Djmn( 1, 1, 1, phi, tht, gamma ) * amp1 );
  vertex( 0, 1, Djmn( 1, 1, -1, phi, tht, gamma ) * amp1 );
  vertex( 0, 2, Djmn( 1, 1, 0, phi, tht, gamma ) * amp0 );
  vertex( 1, 0, Djmn( 1, -1, 1, phi, tht, gamma ) * amp1 );
  vertex( 1, 1, Djmn( 1, -1, -1, phi, tht, gamma ) * amp1 );
  vertex( 1, 2, Djmn( 1, -1, 0, phi, tht, gamma ) * amp0 );
  vertex( 2, 0, Djmn( 1, 0, 1, phi, tht, gamma ) * amp1 );
  vertex( 2, 1, Djmn( 1, 0, -1, phi, tht, gamma ) * amp1 );
  vertex( 2, 2, Djmn( 1, 0, 0, phi, tht, gamma ) * amp0 );
 
  return;
}

findMaxPro()

void EvtHelPPJ::findMaxPro

(

EvtParticle *

p

)

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 40 of file EvtHelPPJ.cc.

{ model_name = "HelPPJ"; }

init()

void EvtHelPPJ::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 44 of file EvtHelPPJ.cc.

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

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

• EvtHelPPJ.hh
• EvtHelPPJ.cc