EvtBTo4piCP Class Reference

#include <EvtBTo4piCP.hh>

Inheritance diagram for EvtBTo4piCP:

Public Member Functions
	EvtBTo4piCP ()
virtual	~EvtBTo4piCP ()
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 EvtBTo4piCP.hh.

Constructor & Destructor Documentation

EvtBTo4piCP()

EvtBTo4piCP::EvtBTo4piCP ( )

inline

Definition at line 31 of file EvtBTo4piCP.hh.

{}

Referenced by clone().

~EvtBTo4piCP()

EvtBTo4piCP::~EvtBTo4piCP ( )

virtual

Definition at line 33 of file EvtBTo4piCP.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtBTo4piCP::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 146 of file EvtBTo4piCP.cc.

{ return new EvtBTo4piCP; }

decay()

void EvtBTo4piCP::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 162 of file EvtBTo4piCP.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 );
 
  p->initializePhaseSpace( getNDaug(), getDaugs() );
  EvtVector4R mom1 = p->getDaug( 0 )->getP4();
  EvtVector4R mom2 = p->getDaug( 1 )->getP4();
  EvtVector4R mom3 = p->getDaug( 2 )->getP4();
  EvtVector4R mom4 = p->getDaug( 3 )->getP4();
 
  //  double alpha=getArg(0);
  // double dm=getArg(1);
 
  EvtComplex amp;
 
  EvtComplex A, Abar;
 
  EvtComplex A_a1p, Abar_a1p, A_a2p, Abar_a2p;
  EvtComplex A_a1m, Abar_a1m, A_a2m, Abar_a2m;
 
  A_a1p    = EvtComplex( getArg( 2 ) * cos( getArg( 3 ) ), getArg( 2 ) * sin( getArg( 3 ) ) );
  Abar_a1p = EvtComplex( getArg( 4 ) * cos( getArg( 5 ) ), getArg( 4 ) * sin( getArg( 5 ) ) );
 
  A_a2p    = EvtComplex( getArg( 6 ) * cos( getArg( 7 ) ), getArg( 6 ) * sin( getArg( 7 ) ) );
  Abar_a2p = EvtComplex( getArg( 8 ) * cos( getArg( 9 ) ), getArg( 8 ) * sin( getArg( 9 ) ) );
 
  A_a1m = EvtComplex( getArg( 10 ) * cos( getArg( 11 ) ), getArg( 10 ) * sin( getArg( 11 ) ) );
  Abar_a1m =
      EvtComplex( getArg( 12 ) * cos( getArg( 13 ) ), getArg( 12 ) * sin( getArg( 13 ) ) );
 
  A_a2m = EvtComplex( getArg( 14 ) * cos( getArg( 15 ) ), getArg( 14 ) * sin( getArg( 15 ) ) );
  Abar_a2m =
      EvtComplex( getArg( 16 ) * cos( getArg( 17 ) ), getArg( 16 ) * sin( getArg( 17 ) ) );
 
  EvtComplex a2p_amp = EvtAmpA2( mom1, mom2, mom3, mom4 ) +
                       EvtAmpA2( mom1, mom4, mom3, mom2 ) +
                       EvtAmpA2( mom3, mom2, mom1, mom4 ) + EvtAmpA2( mom3, mom4, mom1, mom2 );
 
  EvtComplex a2m_amp = EvtAmpA2( mom2, mom3, mom4, mom1 ) +
                       EvtAmpA2( mom2, mom1, mom4, mom3 ) +
                       EvtAmpA2( mom4, mom3, mom2, mom1 ) + EvtAmpA2( mom4, mom1, mom2, mom3 );
 
  EvtComplex a1p_amp = EvtAmpA1( mom1, mom2, mom3, mom4 ) +
                       EvtAmpA1( mom1, mom4, mom3, mom2 ) +
                       EvtAmpA1( mom3, mom2, mom1, mom4 ) + EvtAmpA1( mom3, mom4, mom1, mom2 );
 
  EvtComplex a1m_amp = EvtAmpA1( mom2, mom3, mom4, mom1 ) +
                       EvtAmpA1( mom2, mom1, mom4, mom3 ) +
                       EvtAmpA1( mom4, mom3, mom2, mom1 ) + EvtAmpA1( mom4, mom1, mom2, mom3 );
 
  A    = A_a2p * a2p_amp + A_a1p * a1p_amp + A_a2m * a2m_amp + A_a1m * a1m_amp;
  Abar = Abar_a2p * a2p_amp + Abar_a1p * a1p_amp + Abar_a2m * a2m_amp + Abar_a1m * a1m_amp;
 
  if ( other_b == B0B )
  {
    amp = A * cos( getArg( 1 ) * t / ( 2 * EvtConst::c ) ) +
          EvtComplex( cos( -2.0 * getArg( 0 ) ), sin( -2.0 * getArg( 0 ) ) ) * getArg( 2 ) *
              EvtComplex( 0.0, 1.0 ) * Abar * sin( getArg( 1 ) * t / ( 2 * EvtConst::c ) );
  }
  if ( other_b == B0 )
  {
    amp = A * EvtComplex( cos( 2.0 * getArg( 0 ) ), sin( 2.0 * getArg( 0 ) ) ) *
              EvtComplex( 0.0, 1.0 ) * sin( getArg( 1 ) * t / ( 2 * EvtConst::c ) ) +
          getArg( 2 ) * Abar * cos( getArg( 1 ) * t / ( 2 * EvtConst::c ) );
  }
 
  vertex( amp );
 
  return;
}

getName()

void EvtBTo4piCP::getName ( std::string & name )

virtual

Implements EvtDecayBase.

Definition at line 144 of file EvtBTo4piCP.cc.

{ model_name = "BTO4PI_CP"; }

init()

void EvtBTo4piCP::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 148 of file EvtBTo4piCP.cc.

                       {
 
  // check that there are 18 arguments
  checkNArg( 18 );
  checkNDaug( 4 );
 
  checkSpinParent( EvtSpinType::SCALAR );
 
  checkSpinDaughter( 0, EvtSpinType::SCALAR );
  checkSpinDaughter( 1, EvtSpinType::SCALAR );
  checkSpinDaughter( 2, EvtSpinType::SCALAR );
  checkSpinDaughter( 3, EvtSpinType::SCALAR );
}

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

• EvtBTo4piCP.hh
• EvtBTo4piCP.cc