EvtKstarnunu Class Reference

#include <EvtKstarnunu.hh>

Inheritance diagram for EvtKstarnunu:

Public Member Functions
	EvtKstarnunu ()
virtual	~EvtKstarnunu ()
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	getName (std::string &name)=0
virtual void	decay (EvtParticle *p)=0
virtual void	makeDecay (EvtParticle *p)=0
virtual EvtDecayBase *	clone ()=0
virtual void	init ()
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 EvtKstarnunu.hh.

Constructor & Destructor Documentation

EvtKstarnunu()

EvtKstarnunu::EvtKstarnunu ( )

inline

Definition at line 32 of file EvtKstarnunu.hh.

{}

Referenced by clone().

~EvtKstarnunu()

EvtKstarnunu::~EvtKstarnunu ( )

virtual

Definition at line 45 of file EvtKstarnunu.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtKstarnunu::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 54 of file EvtKstarnunu.cc.

                                 {
 
  return new EvtKstarnunu;
 
}

decay()

void EvtKstarnunu::decay ( EvtParticle *  p )

virtual

Implements EvtDecayBase.

Definition at line 78 of file EvtKstarnunu.cc.

                                      {
  
  static EvtId NUE=EvtPDL::getId("nu_e");
  static EvtId NUM=EvtPDL::getId("nu_mu");
  static EvtId NUT=EvtPDL::getId("nu_tau");
  static EvtId NUEB=EvtPDL::getId("anti-nu_e");
  static EvtId NUMB=EvtPDL::getId("anti-nu_mu");
  static EvtId NUTB=EvtPDL::getId("anti-nu_tau");
 
  p->initializePhaseSpace(getNDaug(),getDaugs());
  
  double m_b = p->mass();
 
  EvtParticle *meson, *neutrino1, *neutrino2;
  meson = p->getDaug(0);
  neutrino1 = p->getDaug(1);
  neutrino2 = p->getDaug(2);
  EvtVector4R momnu1 = neutrino1->getP4();
  EvtVector4R momnu2 = neutrino2->getP4();
  EvtVector4R momkstar = meson->getP4();
  
  double v0_0, a0_0, a1_0, a2_0;
  double m2v0, m2a0, a1_b, a2_b;
  v0_0 = 0.47;
  a0_0 = 0.30;
  a1_0 = 0.37;
  a2_0 = 0.40;
  m2v0 = 5.*5.;
  m2a0 = 4.8*4.8;
  a1_b = -0.023;
  a2_b = 0.034;
 
  EvtVector4R q = momnu1+momnu2;
  double q2 = q.mass2();   
 
  double v0, a1, a2;
  v0 = v0_0/(1-q2/m2v0);
  a1 = a1_0*(1+a1_b*q2);
  a2 = a2_0*(1+a2_b*q2);
 
  EvtVector4R p4b; p4b.set(m_b,0.,0.,0.);  // Do calcs in mother rest frame
  
  double m_k = meson->mass();
 
  EvtTensor4C tds=(-2*v0/(m_b+m_k))*dual(directProd(p4b,momkstar))
    - EvtComplex(0.0,1.0)*
    ( (m_b+m_k)*a1*EvtTensor4C::g()
      - (a2/(m_b+m_k))*directProd(p4b-momkstar,p4b+momkstar)); 
  
  EvtVector4C l;
 
  if (getDaug(1)==NUE||getDaug(1)==NUM||getDaug(1)==NUT) {
        l=EvtLeptonVACurrent(neutrino1->spParentNeutrino(),
                 neutrino2->spParentNeutrino());
  }
  if (getDaug(1)==NUEB||getDaug(1)==NUMB||getDaug(1)==NUTB) {
        l=EvtLeptonVACurrent(neutrino2->spParentNeutrino(),
                 neutrino1->spParentNeutrino());
  }
 
  EvtVector4C et0,et1,et2; 
  et0 = tds.cont1( meson->epsParent(0).conj() );
  et1 = tds.cont1( meson->epsParent(1).conj() );
  et2 = tds.cont1( meson->epsParent(2).conj() );
 
  vertex(0,l*et0);
  vertex(1,l*et1);
  vertex(2,l*et2);
 
  return;
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 47 of file EvtKstarnunu.cc.

                                               {
 
  model_name="KSTARNUNU";     
 
}

init()

void EvtKstarnunu::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 60 of file EvtKstarnunu.cc.

                       {
 
  // check that there are 0 arguments
  checkNArg(0);
  checkNDaug(3);
 
  //We expect the parent to be a scalar 
  //and the daughters to be K neutrino netrino
 
  checkSpinParent(EvtSpinType::SCALAR);
 
  checkSpinDaughter(0,EvtSpinType::VECTOR);
  checkSpinDaughter(1,EvtSpinType::NEUTRINO);
  checkSpinDaughter(2,EvtSpinType::NEUTRINO);
 
}

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

• EvtKstarnunu.hh
• EvtKstarnunu.cc