EvtAngH2 Class Reference

#include <EvtAngH2.hh>

Inheritance diagram for EvtAngH2:

Public Member Functions
	EvtAngH2 ()
virtual	~EvtAngH2 ()
void	getName (std::string &name)
EvtDecayBase *	clone ()
void	initProbMax ()
void	init ()
void	decay (EvtParticle *p)
const char *	setFileName ()
const char *	setHpoint ()
Public Member Functions inherited from EvtDecayIncoherent
void	makeDecay (EvtParticle *p)
virtual	~EvtDecayIncoherent ()
void	setDaughterSpinDensity (int daughter)
int	isDaughterSpinDensitySet (int daughter)
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 EvtDecayBase
bool	_daugsDecayedByParentModel

Detailed Description

Definition at line 29 of file EvtAngH2.hh.

Constructor & Destructor Documentation

EvtAngH2()

EvtAngH2::EvtAngH2 ( )

inline

Definition at line 32 of file EvtAngH2.hh.

{}

Referenced by clone().

~EvtAngH2()

EvtAngH2::~EvtAngH2 ( )

virtual

Definition at line 61 of file EvtAngH2.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtAngH2::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 65 of file EvtAngH2.cc.

{ return new EvtAngH2; }

decay()

void EvtAngH2::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 75 of file EvtAngH2.cc.

                                     {
 
  const char* fl = setFileName();
  const char* hp = setHpoint();
  int*        dp;
 
  TFile  f( fl );
  TH2F*  hid   = (TH2F*)f.Get( hp );
  TAxis* xaxis = hid->GetXaxis();
  TAxis* yaxis = hid->GetYaxis();
 
  int    BINSx = xaxis->GetLast();
  int    BINSy = yaxis->GetLast();
  int    BINS  = BINSx * BINSy;
  double yvalue, ymax = 0.0;
  int    i, j, binxy;
 
  for ( i = 1; i < BINSx + 1; i++ )
  {
    for ( j = 1; j < BINSy + 1; j++ )
    {
      binxy  = hid->GetBin( i, j );
      yvalue = hid->GetBinContent( binxy );
      //      cout<<"binxy,yvalue = "<<binxy<<"; "<<yvalue<<endl;
      if ( yvalue > ymax ) ymax = yvalue;
    }
  }
 
loop:
  p->initializePhaseSpace( getNDaug(), getDaugs() );
 
  EvtParticle *id1, *id2, *id3, *id4, *s1;
  EvtVector4R  pd1, pd2, pd3, pd4, ps;
  double       xcostheta, ycostheta;
 
  id1 = p->getDaug( 0 );
  id2 = p->getDaug( 1 );
  id3 = p->getDaug( 2 );
 
  pd1 = id1->getP4Lab();
  pd2 = id2->getP4Lab();
  pd3 = id3->getP4Lab();
 
  xcostheta = pd1.get( 3 ) / pd1.d3mag();
  ycostheta = pd2.get( 3 ) / pd2.d3mag();
  if ( EvtPDL::name( p->getDaug( 0 )->getId() ) == EvtPDL::name( p->getDaug( 1 )->getId() ) )
  {
    if ( pd1.get( 0 ) > pd2.get( 0 ) )
    {
      xcostheta = pd2.get( 3 ) / pd2.d3mag();
      ycostheta = pd1.get( 3 ) / pd1.d3mag();
    }
  }
  int    xbin   = hid->GetXaxis()->FindBin( xcostheta );
  int    ybin   = hid->GetYaxis()->FindBin( ycostheta );
  int    xybin  = hid->GetBin( xbin, ybin );
  double zvalue = hid->GetBinContent( xybin );
  double xratio = zvalue / ymax;
  //  cout<<"***************zvalue,ymax,xratio= "<<zvalue<<"; "<<ymax<<"; "<<xratio<<endl;
  double rd1 = EvtRandom::Flat( 0.0, 1.0 );
  if ( rd1 > xratio ) goto loop;
  return;
}

getName()

void EvtAngH2::getName ( std::string & name )

virtual

Implements EvtDecayBase.

Definition at line 63 of file EvtAngH2.cc.

{ model_name = "AngH2"; }

init()

void EvtAngH2::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 67 of file EvtAngH2.cc.

                    {
 
  // check that there are 4 arguments: Invariant mass part. Index: i,j, histor. file name, Hid
  checkNArg( 0 );
  EvtSpinType::spintype parenttype = EvtPDL::getSpinType( getParentId() );
}

initProbMax()

void EvtAngH2::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 73 of file EvtAngH2.cc.

{ noProbMax(); }

setFileName()

const char * EvtAngH2::setFileName

(

)

Definition at line 10 of file UserAngH2.cc.

                                  {
  const char* filename;
  filename = "AngH2.root"; // specify the root histor. name
  return filename;
}

Referenced by decay().

setHpoint()

const char * EvtAngH2::setHpoint

(

)

Definition at line 16 of file UserAngH2.cc.

                                {
  const char* hpoint;
  // specify scatter plot id, x-axis is the angular distribution(in Lab system) for daugher(0)
  //, y-axix is the  the angular distribution(in Lab system) for daugher(1). They are corrected
  // by detection efficiency
  hpoint = "AngScatter";
  return hpoint;
}

Referenced by decay().

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

• EvtAngH2.hh
• EvtAngH2.cc
• UserAngH2.cc