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 31 of file EvtSVVNONCPEIGEN.hh.

{}

Referenced by clone().

~EvtSVVNONCPEIGEN()

EvtSVVNONCPEIGEN::~EvtSVVNONCPEIGEN ( )

virtual

Definition at line 73 of file EvtSVVNONCPEIGEN.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtSVVNONCPEIGEN::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 77 of file EvtSVVNONCPEIGEN.cc.

{ return new EvtSVVNONCPEIGEN; }

decay()

void EvtSVVNONCPEIGEN::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 128 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 75 of file EvtSVVNONCPEIGEN.cc.

{ model_name = "SVV_NONCPEIGEN"; }

init()

void EvtSVVNONCPEIGEN::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 79 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 117 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