EvtSVVCPLH Class Reference

#include <EvtSVVCPLH.hh>

Inheritance diagram for EvtSVVCPLH:

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

Constructor & Destructor Documentation

EvtSVVCPLH()

EvtSVVCPLH::EvtSVVCPLH ( )

inline

Definition at line 31 of file EvtSVVCPLH.hh.

{}

Referenced by clone().

~EvtSVVCPLH()

EvtSVVCPLH::~EvtSVVCPLH ( )

virtual

Definition at line 37 of file EvtSVVCPLH.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtSVVCPLH::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 41 of file EvtSVVCPLH.cc.

{ return new EvtSVVCPLH; }

decay()

void EvtSVVCPLH::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 64 of file EvtSVVCPLH.cc.

                                       {
 
  // added by Lange Jan4,2000
  static EvtId BS0 = EvtPDL::getId( "B_s0" );
  static EvtId BSB = EvtPDL::getId( "anti-B_s0" );
 
  double t;
  EvtId  other_b;
 
  EvtCPUtil::OtherB( p, t, other_b );
 
  EvtComplex G0P, G1P, G1M;
 
  G1P = EvtComplex( getArg( 3 ) * cos( getArg( 4 ) ), getArg( 3 ) * sin( getArg( 4 ) ) );
  G0P = EvtComplex( getArg( 5 ) * cos( getArg( 6 ) ), getArg( 5 ) * sin( getArg( 6 ) ) );
  G1M = EvtComplex( getArg( 7 ) * cos( getArg( 8 ) ), getArg( 7 ) * sin( getArg( 8 ) ) );
 
  EvtComplex lambda_km = EvtComplex( cos( 2 * getArg( 0 ) ), sin( 2 * getArg( 0 ) ) );
 
  double cdmt = cos( getArg( 1 ) * t / ( 2 * EvtConst::c ) );
  double sdmt = sin( getArg( 1 ) * t / ( 2 * EvtConst::c ) );
 
  EvtComplex cG0P, cG1P, cG1M;
 
  static double ctauL = EvtPDL::getctau( EvtPDL::getId( "B_s0L" ) );
  static double ctauH = EvtPDL::getctau( EvtPDL::getId( "B_s0H" ) );
  static double ctau  = ctauL < ctauH ? ctauH : ctauL;
 
  // I'm not sure if the fabs() is right when t can be
  // negative as in the case of Bs produced coherently.
  double pt = 1;
  double mt = exp( -fabs( t * ( ctauL - ctauH ) / ( ctauL * ctauH ) ) );
 
  if ( other_b == BSB )
  {
    cG0P = pt * G0P * ( cdmt + lambda_km * EvtComplex( 0.0, getArg( 2 ) * sdmt ) );
    cG1P = pt * G1P * ( cdmt + lambda_km * EvtComplex( 0.0, getArg( 2 ) * sdmt ) );
    cG1M = mt * G1M * ( cdmt - lambda_km * EvtComplex( 0.0, getArg( 2 ) * sdmt ) );
  }
  else if ( other_b == BS0 )
  {
    cG0P = pt * G0P * ( cdmt + ( 1.0 / lambda_km ) * EvtComplex( 0.0, getArg( 2 ) * sdmt ) );
    cG1P = pt * G1P * ( cdmt + ( 1.0 / lambda_km ) * EvtComplex( 0.0, getArg( 2 ) * sdmt ) );
    cG1M = -mt * G1M * ( cdmt - ( 1.0 / lambda_km ) * EvtComplex( 0.0, getArg( 2 ) * sdmt ) );
  }
  else
  {
    report( ERROR, "EvtGen" ) << "other_b was not BSB or BS0!" << endl;
    ::abort();
  }
 
  EvtComplex A0, AP, AM;
 
  A0 = cG0P / sqrt( 2.0 );
  AP = ( cG1P + cG1M ) / sqrt( 2.0 );
  AM = ( cG1P - cG1M ) / sqrt( 2.0 );
 
  EvtSVVHelAmp::SVVHel( p, _amp2, getDaug( 0 ), getDaug( 1 ), AP, A0, AM );
 
  return;
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 39 of file EvtSVVCPLH.cc.

{ model_name = "SVV_CPLH"; }

init()

void EvtSVVCPLH::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 43 of file EvtSVVCPLH.cc.

                      {
 
  // check that there are 9 arguments
  checkNArg( 9 );
  checkNDaug( 2 );
 
  checkSpinParent( EvtSpinType::SCALAR );
 
  checkSpinDaughter( 0, EvtSpinType::VECTOR );
  checkSpinDaughter( 1, EvtSpinType::VECTOR );
}

initProbMax()

void EvtSVVCPLH::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 55 of file EvtSVVCPLH.cc.

                             {
 
  // This is probably not quite right, but it should do as a start...
  // Anders
 
  setProbMax( 2 * ( getArg( 3 ) * getArg( 3 ) + getArg( 5 ) * getArg( 5 ) +
                    getArg( 7 ) * getArg( 7 ) ) );
}

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

• EvtSVVCPLH.hh
• EvtSVVCPLH.cc