EvtDeBD Class Reference

#include <EvtDeBD.hh>

Inheritance diagram for EvtDeBD:

Public Member Functions
	EvtDeBD ()
virtual	~EvtDeBD ()
void	getName (std::string &name)
EvtDecayBase *	clone ()
void	init ()
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	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 EvtDeBD.hh.

Constructor & Destructor Documentation

EvtDeBD()

EvtDeBD::EvtDeBD ( )

inline

Definition at line 31 of file EvtDeBD.hh.

{}

Referenced by clone().

~EvtDeBD()

EvtDeBD::~EvtDeBD ( )

virtual

Definition at line 40 of file EvtDeBD.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtDeBD::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 44 of file EvtDeBD.cc.

{ return new EvtDeBD; }

decay()

void EvtDeBD::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 64 of file EvtDeBD.cc.

                                    {
 
  static EvtId PIM = EvtPDL::getId( "pi-" );
  static EvtId PI0 = EvtPDL::getId( "pi0" );
  static EvtId KM  = EvtPDL::getId( "K-" );
 
  static EvtId L0  = EvtPDL::getId( "Lambda0" );
  static EvtId LB  = EvtPDL::getId( "anti-Lambda0" );
  static EvtId XM  = EvtPDL::getId( "Xi-" );
  static EvtId XMB = EvtPDL::getId( "anti-Xi+" );
  static EvtId X0  = EvtPDL::getId( "Xi0" );
  static EvtId X0B = EvtPDL::getId( "anti-Xi0" );
 
  static EvtId OM  = EvtPDL::getId( "Omega-" );
  static EvtId OMB = EvtPDL::getId( "anti-Omega+" );
 
  p->initializePhaseSpace( getNDaug(), getDaugs() );
 
  EvtParticle *l1, *l2;
  l1 = p->getDaug( 0 );
  l2 = p->getDaug( 1 );
 
  EvtId p1, d1, d2;
  p1 = p->getId();
  d1 = l1->getId();
  d2 = l2->getId();
 
  EvtVector4R pDaug = l1->getP4();
  double      p3    = pDaug.d3mag();
 
  EvtVector4R pv, ps, ppr;
  pv  = l1->getP4Lab(); // baryon
  ps  = l2->getP4Lab(); // meson
  ppr = p->getP4();
 
  double    theta, alpha;
  EvtHelSys angles( ppr, pv ); // using helicity sys.angles
  theta        = angles.getHelAng( 1 );
  double phi   = angles.getHelAng( 2 );
  double gamma = 0;
 
  if ( ( p1 == OM ) && ( d1 == L0 ) ) { alpha = 0.0175; }
  else if ( ( p1 == OMB ) && ( d1 == LB ) ) { alpha = -0.0175; }
  else if ( ( p1 == OM ) && ( d1 == X0 ) ) { alpha = 0.09; }
  else if ( ( p1 == OMB ) || ( d1 == X0B ) ) { alpha = -0.09; }
  else if ( ( p1 == OM ) || ( d1 == XM ) ) { alpha = 0.05; }
  else if ( ( p1 == OMB ) || ( d1 == XMB ) ) { alpha = -0.05; }
 
  double FP, FM;
  if ( p1 == OM || p1 == OMB )
  {
    FM = sqrt( ( 1 + alpha ) / 2. );
    FP = sqrt( ( 1 - alpha ) / 2. );
  }
  else
  {
    FP = 1;
    FM = 1;
  }
 
  vertex( 0, 0, Djmn( 1.5, 0.5, 0.5, phi, theta, gamma ) * FP );
  vertex( 0, 1, Djmn( 1.5, 0.5, -0.5, phi, theta, gamma ) * FM );
  vertex( 1, 0, Djmn( 1.5, 1.5, 0.5, phi, theta, gamma ) * FP );
  vertex( 1, 1, Djmn( 1.5, 1.5, -0.5, phi, theta, gamma ) * FM );
  vertex( 2, 0, Djmn( 1.5, -1.5, 0.5, phi, theta, gamma ) * FP );
  vertex( 2, 1, Djmn( 1.5, -1.5, -0.5, phi, theta, gamma ) * FM );
  vertex( 3, 0, Djmn( 1.5, -0.5, 0.5, phi, theta, gamma ) * FP );
  vertex( 3, 1, Djmn( 1.5, -0.5, -0.5, phi, theta, gamma ) * FM );
 
  return;
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 42 of file EvtDeBD.cc.

{ model_name = "DeBD"; }

init()

void EvtDeBD::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 46 of file EvtDeBD.cc.

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

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

• EvtDeBD.hh
• EvtDeBD.cc