EvtBTo3piCP Class Reference

#include <EvtBTo3piCP.hh>

Inheritance diagram for EvtBTo3piCP:

Public Member Functions
	EvtBTo3piCP ()
virtual	~EvtBTo3piCP ()
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 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 EvtBTo3piCP.hh.

Constructor & Destructor Documentation

EvtBTo3piCP()

EvtBTo3piCP::EvtBTo3piCP ( )

inline

Definition at line 31 of file EvtBTo3piCP.hh.

{}

Referenced by clone().

~EvtBTo3piCP()

EvtBTo3piCP::~EvtBTo3piCP ( )

virtual

Definition at line 38 of file EvtBTo3piCP.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtBTo3piCP::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 42 of file EvtBTo3piCP.cc.

{ return new EvtBTo3piCP; }

decay()

void EvtBTo3piCP::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 59 of file EvtBTo3piCP.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 );
 
  EvtParticle *pip, *pim, *pi0;
 
  p->makeDaughters( getNDaug(), getDaugs() );
 
  //  p->init_daug(SCALAR,&pip,SCALAR,&pim,SCALAR,&pi0);
  pip = p->getDaug( 0 );
  pim = p->getDaug( 1 );
  pi0 = p->getDaug( 2 );
 
  EvtVector4R p4[3];
 
  double dm    = getArg( 0 );
  double alpha = getArg( 1 );
  int    iset;
 
  static int first = 1;
 
  if ( first == 1 )
  {
    iset  = 10000;
    first = 0;
  }
  else { iset = 0; }
 
  double p4piplus[4], p4piminus[4], p4gamm1[4], p4gamm2[4];
 
  double realA, imgA, realbarA, imgbarA;
 
  evt3pions_( &alpha, &iset, p4piplus, p4piminus, p4gamm1, p4gamm2, &realA, &imgA, &realbarA,
              &imgbarA );
 
  p4[0].set( p4piplus[3], p4piplus[0], p4piplus[1], p4piplus[2] );
  p4[1].set( p4piminus[3], p4piminus[0], p4piminus[1], p4piminus[2] );
  p4[2].set( p4gamm1[3] + p4gamm2[3], p4gamm1[0] + p4gamm2[0], p4gamm1[1] + p4gamm2[1],
             p4gamm1[2] + p4gamm2[2] );
 
  if ( pip->getId() == EvtPDL::getId( "pi+" ) )
  {
    pip->init( getDaug( 0 ), p4[0] );
    pim->init( getDaug( 1 ), p4[1] );
  }
  else
  {
    pip->init( getDaug( 0 ), p4[1] );
    pim->init( getDaug( 1 ), p4[0] );
  }
 
  pi0->init( getDaug( 2 ), p4[2] );
 
  EvtComplex amp;
 
  EvtComplex A( realA, imgA );
  EvtComplex Abar( realbarA, imgbarA );
 
  if ( other_b == B0B )
  {
    amp = A * cos( dm * t / ( 2 * EvtConst::c ) ) +
          EvtComplex( 0., 1. ) * Abar * sin( dm * t / ( 2 * EvtConst::c ) );
  }
  if ( other_b == B0 )
  {
    amp = Abar * cos( dm * t / ( 2 * EvtConst::c ) ) +
          EvtComplex( 0., 1. ) * A * sin( dm * t / ( 2 * EvtConst::c ) );
  }
 
  vertex( amp );
 
  return;
}

getName()

void EvtBTo3piCP::getName ( std::string & name )

virtual

Implements EvtDecayBase.

Definition at line 40 of file EvtBTo3piCP.cc.

{ model_name = "BTO3PI_CP"; }

init()

void EvtBTo3piCP::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 44 of file EvtBTo3piCP.cc.

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

initProbMax()

void EvtBTo3piCP::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 57 of file EvtBTo3piCP.cc.

{ setProbMax( 1.5 ); }

---

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

• EvtBTo3piCP.hh
• EvtBTo3piCP.cc