EvtBody3 Class Reference

#include <EvtBody3.hh>

Inheritance diagram for EvtBody3:

Public Member Functions
	EvtBody3 ()
virtual	~EvtBody3 ()
void	getName (std::string &name)
EvtDecayBase *	clone ()
void	initProbMax ()
void	init ()
void	decay (EvtParticle *p)
const char *	setFileName ()
const char *	setHpoint ()
const char *	setDaugAng (int i)
int	setDaugAngNo ()
int *	setDaugPair ()
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 EvtBody3.hh.

Constructor & Destructor Documentation

EvtBody3()

EvtBody3::EvtBody3 ( )

inline

Definition at line 32 of file EvtBody3.hh.

{}

Referenced by clone().

~EvtBody3()

EvtBody3::~EvtBody3 ( )

virtual

Definition at line 58 of file EvtBody3.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtBody3::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 62 of file EvtBody3.cc.

{ return new EvtBody3; }

decay()

void EvtBody3::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 72 of file EvtBody3.cc.

                                     {
 
  const char* fl = setFileName();
  const char* hp = setHpoint();
  int*        dp;
  int         nd1, nd2, ii, sn;
 
  sn = setDaugAngNo();
 
  if ( sn == 2 )
  {
    nd1 = 0;
    nd2 = 1;
  }
 
  if ( sn == 0 )
  {
    nd1 = 1;
    nd2 = 2;
  }
 
  if ( sn == 1 )
  {
    nd1 = 0;
    nd2 = 2;
  }
  const char* DA1 = setDaugAng( nd1 );
  const char* DA2 = setDaugAng( nd2 );
 
  dp     = setDaugPair();
  int d1 = dp[0]; // m(d1,d2) pair at X axis
  int d2 = dp[1];
  int d3 = dp[2]; // m(d3,d4) pair at Y axis
  int d4 = dp[3];
 
  TFile f( fl );
  TH1F* did1 = (TH1F*)f.Get( DA1 );
  TH1F* did2 = (TH1F*)f.Get( DA2 );
  TH2F* hid  = (TH2F*)f.Get( hp );
 
  TAxis* d1x   = did1->GetXaxis();
  TAxis* d2x   = did2->GetXaxis();
  TAxis* xaxis = hid->GetXaxis();
  TAxis* yaxis = hid->GetYaxis();
 
  int BINSd1 = did1->GetXaxis()->GetLast();
  int BINSd2 = did2->GetXaxis()->GetLast();
  int BINSx  = xaxis->GetLast();
  int BINSy  = yaxis->GetLast();
  int BINS   = BINSx * BINSy;
 
  double av1, av2, avm1, avm2;
  avm1 = 0.;
  avm2 = 0.;
  double yvalue, ymax = 0.0;
  int    i, j, binxy;
 
  // look for maxmum for the first hist.1
  for ( i = 1; i < BINSd1 + 1; i++ )
  {
    av1 = did1->GetBinContent( i );
    if ( av1 > avm1 ) avm1 = av1;
  }
 
  // look for maxmum for the second hist.1
  for ( i = 1; i < BINSd2 + 1; i++ )
  {
    av2 = did2->GetBinContent( i );
    if ( av2 > avm2 ) avm2 = av2;
  }
 
  // look for maxmum for the Dalitz plot
 
  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;
  EvtVector4R  dp1, dp2;
  double       xmass2, ymass2;
 
  id1 = p->getDaug( d1 );
  id2 = p->getDaug( d2 );
  id3 = p->getDaug( d3 );
  id4 = p->getDaug( d4 );
 
  pd1 = id1->getP4Lab();
  pd2 = id2->getP4Lab();
  pd3 = id3->getP4Lab();
  pd4 = id4->getP4Lab();
 
  dp1 = p->getDaug( nd1 )->getP4Lab();
  dp2 = p->getDaug( nd2 )->getP4Lab();
 
  xmass2 = ( pd1 + pd2 ).mass2();
  ymass2 = ( pd3 + pd4 ).mass2();
 
  int    xbin   = hid->GetXaxis()->FindBin( xmass2 );
  int    ybin   = hid->GetYaxis()->FindBin( ymass2 );
  int    xybin  = hid->GetBin( xbin, ybin );
  double zvalue = hid->GetBinContent( xybin );
  double xratio = zvalue / ymax;
  if ( xratio == 0 ) goto loop;
  double rd1 = EvtRandom::Flat( 0.0, 1.0 );
  if ( rd1 > xratio ) goto loop; // sigle out event by 2-D mass distribution histo.
 
  double da1 = dp1.get( 3 ) / dp1.d3mag();
  double da2 = dp2.get( 3 ) / dp2.d3mag();
 
  int dbin1 = did1->FindBin( da1 );
  int dbin2 = did2->FindBin( da2 );
 
  double dr1 = ( did1->GetBinContent( dbin1 ) ) / avm1;
  double dr2 = ( did2->GetBinContent( dbin2 ) ) / avm2;
  if ( dr1 == 0 || dr2 == 0 ) goto loop;
  rd1 = EvtRandom::Flat( 0.0, 1.0 );
  if ( rd1 > dr1 ) goto loop; // sigle out event by the first angular distribution histo.
 
  rd1 = EvtRandom::Flat( 0.0, 1.0 );
  if ( rd1 > dr2 ) goto loop; // sigle out event by the second angular distribution histo.
 
  return;
}

getName()

void EvtBody3::getName ( std::string & name )

virtual

Implements EvtDecayBase.

Definition at line 60 of file EvtBody3.cc.

{ model_name = "Body3"; }

init()

void EvtBody3::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 64 of file EvtBody3.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 EvtBody3::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 70 of file EvtBody3.cc.

{ noProbMax(); }

setDaugAng()

const char * EvtBody3::setDaugAng

(

int

i

)

Definition at line 23 of file UserBody3.cc.

                                        {
 
  const char* DaugAng0 = "costhetag"; // Daugher numbering defined at DEC file
  const char* DaugAng1 = "costhetav";
  const char* DaugAng2 = "xxx"; // not use, then set PN=2 in setDaugAngNo();
  if ( i == 0 ) return DaugAng0;
  if ( i == 1 ) return DaugAng1;
  if ( i == 2 ) return DaugAng2;
 
  cerr << __FILE__ << ":" << __LINE__ << ": "
       << "Should not reach here!" << endl;
  abort();
}

Referenced by decay().

setDaugAngNo()

int EvtBody3::setDaugAngNo

(

)

Definition at line 37 of file UserBody3.cc.

                           {
  int PN = 2; // e.g. DaugAng2="xxx", set PN=2;  DaugAng0="xxx", set PN=0;
  return PN;
}

Referenced by decay().

setDaugPair()

int * EvtBody3::setDaugPair

(

)

Definition at line 42 of file UserBody3.cc.

                           {
  static int DP[4];
  DP[0] = 0; // 0,1,2,... indexes for daughter particles
  DP[1] = 2;
  DP[2] = 1;
  DP[3] = 2;
  return DP;
}

Referenced by decay().

setFileName()

const char * EvtBody3::setFileName

(

)

Definition at line 11 of file UserBody3.cc.

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

Referenced by decay().

setHpoint()

const char * EvtBody3::setHpoint

(

)

Definition at line 17 of file UserBody3.cc.

                                {
  const char* hpoint;
  hpoint = "hdalitz"; // specify the histor. id
  return hpoint;
}

Referenced by decay().

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

• EvtBody3.hh
• EvtBody3.cc
• UserBody3.cc