EvtPycont Class Reference

#include <EvtPycont.hh>

Inheritance diagram for EvtPycont:

Public Member Functions
	EvtPycont ()
virtual	~EvtPycont ()
void	getName (std::string &name)
EvtDecayBase *	clone ()
void	init ()
void	initProbMax ()
void	decay (EvtParticle *p)
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 EvtPycont.hh.

Constructor & Destructor Documentation

EvtPycont()

EvtPycont::EvtPycont ( )

inline

Definition at line 31 of file EvtPycont.hh.

{}

Referenced by clone().

~EvtPycont()

EvtPycont::~EvtPycont ( )

virtual

Definition at line 70 of file EvtPycont.cc.

                      {
  //  int i=1;
  //  pystat_(i);
}

Member Function Documentation

clone()

EvtDecayBase * EvtPycont::clone ( )

virtual

Implements EvtDecayBase.

Definition at line 77 of file EvtPycont.cc.

{ return new EvtPycont; }

decay()

void EvtPycont::decay ( EvtParticle * p )

virtual

Implements EvtDecayBase.

Definition at line 118 of file EvtPycont.cc.

                                      {
 
  double energy   = p->mass();
  cbbeam_.maximum = energy; // ini. parp(171), see EvtPythia.cc
 
  // std::cout<<"energy= "<<energy<<std::endl;
 
  if ( energy == 0 )
  {
    std::cout << "Particle " << EvtPDL::name( p->getId() ) << " has zero mass" << std::endl;
    abort();
  }
  EvtPythia::pythiaInit( 0 ); // init. for the firt events
  int mydummy = 0;
  initpythia_( &mydummy ); // init. energy event by event
 
  EvtVector4R p4[100];
 
  int   i, more, nson;
  int   ndaugjs;
  int   kf[100];
  EvtId id[100];
  int   type[MAX_DAUG];
 
  double px[100], py[100], pz[100], e[100];
 
  if ( p->getNDaug() != 0 ) { return; }
  do {
    EvtPythia::pythiacont( &energy, &ndaugjs, kf, px, py, pz, e );
 
    double toteng = 0;
 
    for ( i = 0; i < ndaugjs; i++ )
    {
 
      id[i] = EvtPDL::evtIdFromStdHep( kf[i] );
 
      type[i] = EvtPDL::getSpinType( id[i] );
 
      // std::cout<<"i, id[i] "<<i<<" "<<EvtPDL::getStdHep(id[i])<<std::endl;
 
      // have to protect against negative mass^2 for massless particles
      // i.e. neutrinos and photons.
      // this is uggly but I need to fix it right now....
      toteng += e[i];
      if ( px[i] * px[i] + py[i] * py[i] + pz[i] * pz[i] >= e[i] * e[i] )
        e[i] = sqrt( px[i] * px[i] + py[i] * py[i] + pz[i] * pz[i] ) + 0.0000000000001;
 
      p4[i].set( e[i], px[i], py[i], pz[i] );
    }
    // if( fabs(toteng-energy)>0.001 ) std::cout<<"Total energy of pythia decayed particle is
    // larger than parent energy"<<std::endl;
 
    int channel = EvtDecayTable::inChannelList( p->getId(), ndaugjs, id );
 
    more = ( ( channel != -1 ) && ( channel != p->getChannel() ) );
    // std::cout<<"more="<<more<<std::endl;
 
  } while ( more );
 
  p->makeDaughters( ndaugjs, id );
 
  for ( i = 0; i < ndaugjs; i++ ) p->getDaug( i )->init( id[i], p4[i] );
 
  if ( energy < 2.0 ) { EvtGlobalSet::ConExcPythia = 0; }
  else { EvtGlobalSet::ConExcPythia = 1; } // cut off for minimum Mhad
  return;
}

getName()

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

virtual

Implements EvtDecayBase.

Definition at line 75 of file EvtPycont.cc.

{ model_name = "PYCONT"; }

init()

void EvtPycont::init ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 79 of file EvtPycont.cc.

                     {
  // check that there are 1 argument
  if ( !( getNArg() == 12 || getNArg() == 0 || getNArg() == 1 ) )
  {
    report( ERROR, "EvtGen" )
        << "EvtPYCONT expects "
        << " 12 arguments (d u s c b t e nu_e mu nu_mu tau nu_tau) but found: " << getNArg()
        << endl;
  }
  checkNArg( 0, 1, 12 );
  isrflag_.myisr = 1; // default value, turn on ISR
  for ( int i = 0; i < 18; i++ ) decaych_.dc[i] = 0;
  if ( getNArg() == 12 )
  {
    decaych_.dc[0]  = (int)getArg( 0 );
    decaych_.dc[1]  = (int)getArg( 1 );
    decaych_.dc[2]  = (int)getArg( 2 );
    decaych_.dc[3]  = (int)getArg( 3 );
    decaych_.dc[4]  = (int)getArg( 4 );
    decaych_.dc[5]  = (int)getArg( 5 );
    decaych_.dc[10] = (int)getArg( 6 );
    decaych_.dc[11] = (int)getArg( 7 );
    decaych_.dc[12] = (int)getArg( 8 );
    decaych_.dc[13] = (int)getArg( 9 );
    decaych_.dc[14] = (int)getArg( 10 );
    decaych_.dc[15] = (int)getArg( 11 );
  }
  else if ( getNArg() == 1 )
  {
    isrflag_.myisr = (int)getArg( 0 );
    decaych_.dc[0] = 1;
    decaych_.dc[1] = 1;
    decaych_.dc[2] = 1;
    decaych_.dc[3] = 1;
  }
}

initProbMax()

void EvtPycont::initProbMax ( )

virtual

Reimplemented from EvtDecayBase.

Definition at line 116 of file EvtPycont.cc.

{ noProbMax(); }

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

• EvtPycont.hh
• EvtPycont.cc