[u/mrichter/AliRoot.git] / TEvtGen / EvtGenModels / EvtbTosllAli.cxx

//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 2003      Caltech, UCSB
//
// Module: EvtbTosllAli.cc
//
// Description: Routine to implement b->sll decays according to Ali '02 et al. 
//
// Modification history:
//
//    Ryd     March 30, 2003        Module created
//
//------------------------------------------------------------------------
// 
#include "EvtGenBase/EvtPatches.hh"
#include <stdlib.h>
#include "EvtGenBase/EvtParticle.hh"
#include "EvtGenBase/EvtGenKine.hh"
#include "EvtGenBase/EvtPDL.hh"
#include "EvtGenBase/EvtReport.hh"
#include "EvtGenModels/EvtbTosllAli.hh"
#include "EvtGenModels/EvtbTosllAliFF.hh"
#include "EvtGenModels/EvtbTosllAmp.hh"
#include "EvtGenModels/EvtbTosllScalarAmp.hh"
#include "EvtGenModels/EvtbTosllVectorAmp.hh"

#include <string>
using std::endl;

EvtbTosllAli::~EvtbTosllAli() {}

std::string EvtbTosllAli::getName(){

  return "BTOSLLALI";     
}


EvtDecayBase* EvtbTosllAli::clone(){

  return new EvtbTosllAli;

}

void EvtbTosllAli::decay( EvtParticle *p ){

  setWeight(p->initializePhaseSpace(getNDaug(),getDaugs(),_poleSize,1,2));

  _calcamp->CalcAmp(p,_amp2,_aliffmodel);
  
}


void EvtbTosllAli::initProbMax(){

  EvtId parnum,mesnum,l1num,l2num;
  
  parnum = getParentId();
  mesnum = getDaug(0);
  l1num = getDaug(1);
  l2num = getDaug(2);
  
  //This routine sets the _poleSize.
  double mymaxprob = _calcamp->CalcMaxProb(parnum,mesnum,
					   l1num,l2num,
					   _aliffmodel,_poleSize);

  setProbMax(mymaxprob);

}


void EvtbTosllAli::init(){

  checkNArg(0);
  checkNDaug(3);

  //We expect the parent to be a scalar 
  //and the daughters to be X lepton+ lepton-

  checkSpinParent(EvtSpinType::SCALAR);

  EvtSpinType::spintype mesontype=EvtPDL::getSpinType(getDaug(0));

  if ( !(mesontype == EvtSpinType::VECTOR||
	mesontype == EvtSpinType::SCALAR)) {
    report(ERROR,"EvtGen") << "EvtbTosllAli generator expected "
                           << " a SCALAR or VECTOR 1st daughter, found:"<<
                           EvtPDL::name(getDaug(0)).c_str()<<endl;
    report(ERROR,"EvtGen") << "Will terminate execution!"<<endl;
    ::abort();
  }

  checkSpinDaughter(1,EvtSpinType::DIRAC);
  checkSpinDaughter(2,EvtSpinType::DIRAC);

  _aliffmodel = new EvtbTosllAliFF();
  if (mesontype == EvtSpinType::SCALAR){
    _calcamp = new EvtbTosllScalarAmp(-0.313,4.344,-4.669); 
  }
  if (mesontype == EvtSpinType::VECTOR){
    _calcamp = new EvtbTosllVectorAmp(-0.313,4.344,-4.669); 
  }

}
Commit	Line	Data
da0e9ce3	1	//--------------------------------------------------------------------------
	2	//
	3	// Environment:
	4	// This software is part of the EvtGen package developed jointly
	5	// for the BaBar and CLEO collaborations. If you use all or part
	6	// of it, please give an appropriate acknowledgement.
	7	//
	8	// Copyright Information: See EvtGen/COPYRIGHT
	9	// Copyright (C) 2003 Caltech, UCSB
	10	//
	11	// Module: EvtbTosllAli.cc
	12	//
	13	// Description: Routine to implement b->sll decays according to Ali '02 et al.
	14	//
	15	// Modification history:
	16	//
	17	// Ryd March 30, 2003 Module created
	18	//
	19	//------------------------------------------------------------------------
	20	//
	21	#include "EvtGenBase/EvtPatches.hh"
	22	#include <stdlib.h>
	23	#include "EvtGenBase/EvtParticle.hh"
	24	#include "EvtGenBase/EvtGenKine.hh"
	25	#include "EvtGenBase/EvtPDL.hh"
	26	#include "EvtGenBase/EvtReport.hh"
	27	#include "EvtGenModels/EvtbTosllAli.hh"
	28	#include "EvtGenModels/EvtbTosllAliFF.hh"
	29	#include "EvtGenModels/EvtbTosllAmp.hh"
	30	#include "EvtGenModels/EvtbTosllScalarAmp.hh"
	31	#include "EvtGenModels/EvtbTosllVectorAmp.hh"
	32
	33	#include <string>
	34	using std::endl;
	35
	36	EvtbTosllAli::~EvtbTosllAli() {}
	37
	38	std::string EvtbTosllAli::getName(){
	39
	40	return "BTOSLLALI";
	41	}
	42
	43
	44	EvtDecayBase* EvtbTosllAli::clone(){
	45
	46	return new EvtbTosllAli;
	47
	48	}
	49
	50	void EvtbTosllAli::decay( EvtParticle *p ){
	51
	52	setWeight(p->initializePhaseSpace(getNDaug(),getDaugs(),_poleSize,1,2));
	53
	54	_calcamp->CalcAmp(p,_amp2,_aliffmodel);
	55
	56	}
	57
	58
	59	void EvtbTosllAli::initProbMax(){
	60
	61	EvtId parnum,mesnum,l1num,l2num;
	62
	63	parnum = getParentId();
	64	mesnum = getDaug(0);
65	l1num = getDaug(1);
66	l2num = getDaug(2);
67
68	//This routine sets the _poleSize.
69	double mymaxprob = _calcamp->CalcMaxProb(parnum,mesnum,
70	l1num,l2num,
71	_aliffmodel,_poleSize);
72
73	setProbMax(mymaxprob);
74
75	}
76
77
78	void EvtbTosllAli::init(){
79
80	checkNArg(0);
81	checkNDaug(3);
82
83	//We expect the parent to be a scalar
84	//and the daughters to be X lepton+ lepton-
85
86	checkSpinParent(EvtSpinType::SCALAR);
87
88	EvtSpinType::spintype mesontype=EvtPDL::getSpinType(getDaug(0));
89
90	if ( !(mesontype == EvtSpinType::VECTOR\|\|
91	mesontype == EvtSpinType::SCALAR)) {
92	report(ERROR,"EvtGen") << "EvtbTosllAli generator expected "
93	<< " a SCALAR or VECTOR 1st daughter, found:"<<
94	EvtPDL::name(getDaug(0)).c_str()<<endl;
95	report(ERROR,"EvtGen") << "Will terminate execution!"<<endl;
96	::abort();
97	}
98
99	checkSpinDaughter(1,EvtSpinType::DIRAC);
100	checkSpinDaughter(2,EvtSpinType::DIRAC);
101
102	_aliffmodel = new EvtbTosllAliFF();
103	if (mesontype == EvtSpinType::SCALAR){
104	_calcamp = new EvtbTosllScalarAmp(-0.313,4.344,-4.669);
105	}
106	if (mesontype == EvtSpinType::VECTOR){
107	_calcamp = new EvtbTosllVectorAmp(-0.313,4.344,-4.669);
108	}
109
110	}
111
112
113
114
115