The class provides the form factors for orbitally excited semileptonic decays. More...

#include <EvtBGL.h>

Inheritance diagram for EvtBGL:

Public Member Functions
	EvtBGL ()
	Default constructor.

virtual	~EvtBGL ()
	virtual destructor

std::string	getName ()
	Returns name of module.

EvtDecayBase *	clone ()
	Clones module.

void	decay (EvtParticle *p)
	Creates a decay.

void	initProbMax ()
	Sets maximal probab.

void	init ()
	Initializes module.

Private Attributes
EvtSemiLeptonicFF *	bglffmodel
	Pointers needed for FFs.

EvtSemiLeptonicAmp *	calcamp
	Pointers needed to calculate amplitude.

Detailed Description

The class provides the form factors for orbitally excited semileptonic decays.

Definition at line 19 of file EvtBGL.h.

Constructor & Destructor Documentation

◆ EvtBGL()

EvtBGL ( )

Default constructor.

Definition at line 26 of file EvtBGL.cc.

              :
  bglffmodel(0)
  , calcamp(0)
{}

◆ ~EvtBGL()

~EvtBGL ( )

virtual

virtual destructor

Definition at line 31 of file EvtBGL.cc.

{
  delete bglffmodel;
  bglffmodel = 0;
  delete calcamp;
  calcamp = 0;
}

Member Function Documentation

◆ clone()

EvtDecayBase * clone ( )

Clones module.

Definition at line 48 of file EvtBGL.cc.

{
 
  return new EvtBGL;
 
}

◆ decay()

void decay ( EvtParticle * p )

Creates a decay.

Definition at line 56 of file EvtBGL.cc.

{
 
  p->initializePhaseSpace(getNDaug(), getDaugs());
  calcamp->CalcAmp(p, _amp2, bglffmodel);
 
}

◆ getName()

std::string getName ( )

Returns name of module.

Definition at line 39 of file EvtBGL.cc.

{
 
  return "BGL";
 
}

◆ init()

void init ( )

Initializes module.

Definition at line 99 of file EvtBGL.cc.

{
 
  checkNDaug(3);
 
  //We expect the parent to be a scalar
  //and the daughters to be X lepton neutrino
  checkSpinParent(EvtSpinType::SCALAR);
 
  checkSpinDaughter(1, EvtSpinType::DIRAC);
  checkSpinDaughter(2, EvtSpinType::NEUTRINO);
 
  EvtSpinType::spintype d1type = EvtPDL::getSpinType(getDaug(0));
  if (d1type == EvtSpinType::SCALAR) {
    if (getNArg() == 8) {
      bglffmodel = new EvtBGLFF(getArg(0), getArg(1), getArg(2), getArg(3), getArg(4), getArg(5), getArg(6), getArg(7));
      calcamp = new EvtSemiLeptonicScalarAmp;
    } else {
      EvtGenReport(EVTGEN_ERROR, "EvtGen") << "BGL (N=3) model for scalar meson daughters needs 8 arguments. Sorry." << endl;
 
      ::abort();
    }
  }  else if (d1type == EvtSpinType::VECTOR) {
    if (getNArg() == 6) {
      bglffmodel = new EvtBGLFF(getArg(0), getArg(1), getArg(2), getArg(3), getArg(4), getArg(5));
      calcamp = new EvtSemiLeptonicVectorAmp;
    } else {
      EvtGenReport(EVTGEN_ERROR, "EvtGen") << "BGL model for vector meson daughters needs 6 arguments. Sorry." << endl;
      ::abort();
    }
  } else {
    EvtGenReport(EVTGEN_ERROR, "EvtGen") << "BGL model handles only scalar and vector meson daughters. Sorry." << endl;
    ::abort();
  }
 
 
}

◆ initProbMax()

void initProbMax ( )

Sets maximal probab.

Definition at line 64 of file EvtBGL.cc.

{
 
  EvtId parnum, mesnum, lnum, nunum;
 
  parnum = getParentId();
  mesnum = getDaug(0);
  lnum = getDaug(1);
  nunum = getDaug(2);
 
  double mymaxprob = calcamp->CalcMaxProb(parnum, mesnum,
                                          lnum, nunum, bglffmodel);
 
  // Leptons
  static EvtId EM = EvtPDL::getId("e-");
  static EvtId EP = EvtPDL::getId("e+");
  static EvtId MUM = EvtPDL::getId("mu-");
  static EvtId MUP = EvtPDL::getId("mu+");
  static EvtId TAUM = EvtPDL::getId("tau-");
  static EvtId TAUP = EvtPDL::getId("tau+");
 
  if (lnum == EP || lnum == EM || lnum == MUP || lnum == MUM) {
    setProbMax(mymaxprob);
    return;
  }
  if (lnum == TAUP || lnum == TAUM) {
    setProbMax(6500);
    return;
  }
 
 
 
}

Member Data Documentation

◆ bglffmodel

EvtSemiLeptonicFF* bglffmodel

private

Pointers needed for FFs.

Definition at line 47 of file EvtBGL.h.

◆ calcamp

EvtSemiLeptonicAmp* calcamp