EvtVVpipi Class Reference

#include <EvtVVpipi.hh>

Inheritance diagram for EvtVVpipi:

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

Constructor & Destructor Documentation

EvtVVpipi()

EvtVVpipi::EvtVVpipi ( )

inline

Definition at line 32 of file EvtVVpipi.hh.

{}

Referenced by clone().

~EvtVVpipi()

EvtVVpipi::~EvtVVpipi ( )

virtual

Definition at line 34 of file EvtVVpipi.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtVVpipi::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 38 of file EvtVVpipi.cc.

{ return new EvtVVpipi; }

decay()

void EvtVVpipi::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 70 of file EvtVVpipi.cc.

                                      {
 
  p->initializePhaseSpace( getNDaug(), getDaugs() );
 
  EvtParticle *v, *s1, *s2;
 
  v  = p->getDaug( 0 );
  s1 = p->getDaug( 1 );
  s2 = p->getDaug( 2 );
 
  //  Put phase space results into the daughters.
 
  EvtVector4C ep0, ep1, ep2;
 
  ep0 = p->eps( 0 );
  ep1 = p->eps( 1 );
  ep2 = p->eps( 2 );
 
  double fac = ( s1->getP4() + s2->getP4() ).mass2() - 4 * s1->mass() * s2->mass();
 
  vertex( 0, 0, fac * ( ep0 * v->epsParent( 0 ).conj() ) );
  vertex( 0, 1, fac * ( ep0 * v->epsParent( 1 ).conj() ) );
  vertex( 0, 2, fac * ( ep0 * v->epsParent( 2 ).conj() ) );
 
  vertex( 1, 0, fac * ( ep1 * v->epsParent( 0 ).conj() ) );
  vertex( 1, 1, fac * ( ep1 * v->epsParent( 1 ).conj() ) );
  vertex( 1, 2, fac * ( ep1 * v->epsParent( 2 ).conj() ) );
 
  vertex( 2, 0, fac * ( ep2 * v->epsParent( 0 ).conj() ) );
  vertex( 2, 1, fac * ( ep2 * v->epsParent( 1 ).conj() ) );
  vertex( 2, 2, fac * ( ep2 * v->epsParent( 2 ).conj() ) );
 
  return;
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 36 of file EvtVVpipi.cc.

{ model_name = "VVPIPI"; }

init()

void EvtVVpipi::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 40 of file EvtVVpipi.cc.

                     {
 
  static EvtId PIP = EvtPDL::getId( "pi+" );
  static EvtId PIM = EvtPDL::getId( "pi-" );
  static EvtId PI0 = EvtPDL::getId( "pi0" );
 
  // check that there are 0 arguments
  checkNArg( 0 );
  checkNDaug( 3 );
 
  checkSpinParent( EvtSpinType::VECTOR );
  checkSpinDaughter( 0, EvtSpinType::VECTOR );
 
  if ( ( !( getDaug( 1 ) == PIP && getDaug( 2 ) == PIM ) ) &&
       ( !( getDaug( 1 ) == PI0 && getDaug( 2 ) == PI0 ) ) )
  {
    report( ERROR, "EvtGen" ) << "EvtVVpipi generator expected "
                              << " pi+ and pi- (or pi0 and pi0) "
                              << "as 2nd and 3rd daughter. " << endl;
    report( ERROR, "EvtGen" ) << "Will terminate execution!" << endl;
    ::abort();
  }
}

initProbMax()

void EvtVVpipi::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 64 of file EvtVVpipi.cc.

                            {
 
  // Hard coded... should not be hard to calculate...
  setProbMax( 0.08 );
}

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

• EvtVVpipi.hh
• EvtVVpipi.cc