EvtSVVNONCPEIGEN Class Reference

#include <EvtSVVNONCPEIGEN.hh>

Inheritance diagram for EvtSVVNONCPEIGEN:

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

Constructor & Destructor Documentation

EvtSVVNONCPEIGEN()

EvtSVVNONCPEIGEN::EvtSVVNONCPEIGEN ( )

inline

Definition at line 32 of file EvtSVVNONCPEIGEN.hh.

{}

Referenced by clone().

~EvtSVVNONCPEIGEN()

EvtSVVNONCPEIGEN::~EvtSVVNONCPEIGEN ( )

virtual

Definition at line 71 of file EvtSVVNONCPEIGEN.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtSVVNONCPEIGEN::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 80 of file EvtSVVNONCPEIGEN.cc.

                                     {
 
  return new EvtSVVNONCPEIGEN;
 
}

decay()

void EvtSVVNONCPEIGEN::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 130 of file EvtSVVNONCPEIGEN.cc.

                                           {
 
  //added by Lange Jan4,2000
  static EvtId B0=EvtPDL::getId("B0");
  static EvtId B0B=EvtPDL::getId("anti-B0");
 
  double t;
  EvtId other_b;
  EvtId daugs[2];
 
 
  // MB: flip selects the final of the decay
  int flip = ((p->getId() == B0) ? 0 : 1);
  daugs[0]=getDaug(0);
  daugs[1]=getDaug(1);
  p->initializePhaseSpace(2,daugs);
 
  EvtCPUtil::OtherB(p,t,other_b,0.5);
 
  EvtComplex amp[3];
 
  double dmt2 = getArg(0) * t / (2 * EvtConst::c);
  double phiCKM = (2.0 * getArg(1) + getArg(2));   // 2b+g
  EvtComplex ePlusIPhi(cos(phiCKM), sin(phiCKM));
  EvtComplex eMinusIPhi(cos(-phiCKM), sin(-phiCKM));
 
  // flip == 0 : D*-rho+
  // flip == 1 : D*+rho-
 
  if (!flip) {
    if (other_b==B0B){
      // At t=0 we have a B0
      for (int i=0; i<3; ++i) {
    amp[i] = _A_f[i]*cos(dmt2) + eMinusIPhi*EvtComplex(0.0,sin(dmt2))*_A_f[i+3];
      }
    }
    if (other_b==B0){
      // At t=0 we have a B0bar
      for(int i=0; i<3; ++i) {
    amp[i] = _A_f[i]*ePlusIPhi*EvtComplex(0.0,sin(dmt2)) + _A_f[i+3]*cos(dmt2);
      }
    }
  } else{
    if (other_b==B0B){
      // At t=0 we have a B0
 
      // M.Baak 01/16/2004
      // Note: \bar{H}+- = H-+ 
      // If one wants to use the correct helicities for B0 and B0bar decays but the same formula-notation (as done in EvtSVV_HelAmp), 
      // count the B0bar helicities backwards. (Equivalently, one could flip the chi angle.)
 
      for(int i=0; i<3; ++i) { 
    amp[i] = _A_f[8-i]*cos(dmt2) + eMinusIPhi*EvtComplex(0.0,sin(dmt2))*_A_f[11-i];
      }
    }
    if (other_b==B0){
      // At t=0 we have a B0bar
      for(int i=0; i<3; ++i) {
    amp[i] = _A_f[8-i] * ePlusIPhi * EvtComplex(0.0,sin(dmt2)) + _A_f[11-i]*cos(dmt2);
      }
    }
  }
  
  EvtSVVHelAmp::SVVHel(p,_amp2,daugs[0],daugs[1],amp[0],amp[1],amp[2]);
 
  return ;
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 73 of file EvtSVVNONCPEIGEN.cc.

                                                   {
 
  model_name="SVV_NONCPEIGEN";     
 
}

init()

void EvtSVVNONCPEIGEN::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 86 of file EvtSVVNONCPEIGEN.cc.

                           {
 
  // check that there are 27 arguments
  checkNArg(27,15);
  checkNDaug(2);
 
  checkSpinDaughter(0,EvtSpinType::VECTOR);
  checkSpinDaughter(1,EvtSpinType::VECTOR);
 
  //  The ordering of A_f is :
  //  A_f[0-2] = A_f
  //  A_f[3-5] = Abar_f
  //  A_f[6-8] = A_fbar 
  //  A_f[9-11] = Abar_fbar
  //  
  //  Each of the 4 amplitudes include the 3 different helicity states in 
  //  the order +, 0, -. See more about helicity amplitude ordering in ::decay
 
  int i=0;
  int j=(getNArg()-3)/2;
 
  for(i=0; i<j; ++i){
    _A_f[i] = getArg((2*i)+3) * EvtComplex( cos(getArg((2*i)+4)),sin(getArg((2*i)+4)) );
  }
 
  //  If only 6 amplitudes are specified, calculate the last 6 from the first 6:
  if(6 == j){
    for(i = 0; i < 3; ++i){
      _A_f[6+i] = _A_f[3+i];
      _A_f[9+i] = _A_f[i];
    }
  }
}

initProbMax()

void EvtSVVNONCPEIGEN::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 120 of file EvtSVVNONCPEIGEN.cc.

                                   {
  double probMax = 0;
  for (int i = 0; i < 12; ++i){
    double amp = abs(_A_f[i]);
    probMax += amp * amp;
  }
 
  setProbMax(probMax); 
}

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

• EvtSVVNONCPEIGEN.hh
• EvtSVVNONCPEIGEN.cc