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 28 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 57 of file EvtBody3.cc.

{}

Member Function Documentation

clone()

EvtDecayBase * EvtBody3::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 65 of file EvtBody3.cc.

                             {
 
  return new EvtBody3;
 
}

decay()

void EvtBody3::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 84 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 59 of file EvtBody3.cc.

                                           {
 
  model_name="Body3";     
 
}

init()

void EvtBody3::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 72 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 78 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;
}

Referenced by decay().

setDaugAngNo()

int EvtBody3::setDaugAngNo

(

)

Definition at line 33 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 38 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