[u/mrichter/AliRoot.git] / TEvtGen / EvtGenModels / EvtSSDCP.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) 2001      Caltech
//
// Module: EvtSSDCP.cc
//
// Description: See EvtSSDCP.hh
//
// Modification history:
//
//    RYD       August 12, 2001        Module created
//    F. Sandrelli, Fernando M-V  March 1, 2002     Debugged and added z parameter (CPT violation)
//------------------------------------------------------------------------
// 
#include "EvtGenBase/EvtPatches.hh"
#include <stdlib.h>
#include "EvtGenBase/EvtParticle.hh"
#include "EvtGenBase/EvtRandom.hh"
#include "EvtGenBase/EvtGenKine.hh"
#include "EvtGenBase/EvtCPUtil.hh"
#include "EvtGenBase/EvtPDL.hh"
#include "EvtGenBase/EvtReport.hh"
#include "EvtGenBase/EvtVector4C.hh"
#include "EvtGenBase/EvtTensor4C.hh"
#include "EvtGenModels/EvtSSDCP.hh"
#include <string>
#include "EvtGenBase/EvtConst.hh"
using std::endl;

EvtSSDCP::~EvtSSDCP() {}

std::string EvtSSDCP::getName(){

  return "SSD_CP";     

}


EvtDecayBase* EvtSSDCP::clone(){

  return new EvtSSDCP;

}

void EvtSSDCP::init(){

  // check that there are 8 or 12 or 14 arguments

  checkNArg(14,12,8);
  checkNDaug(2);

  EvtSpinType::spintype d1type=EvtPDL::getSpinType(getDaug(0));
  EvtSpinType::spintype d2type=EvtPDL::getSpinType(getDaug(1));

  // Check it is a B0 or B0s
  if ( ( getParentId() != EvtPDL::getId( "B0" ) )
       && ( getParentId() != EvtPDL::getId( "anti-B0" ) ) 
       && ( getParentId() != EvtPDL::getId( "B_s0" ) )
       && ( getParentId() != EvtPDL::getId( "anti-B_s0" ) ) ) {
    report( ERROR , "EvtGen" ) << "EvtSSDCP only decays B0 and B0s" 
                               << std::endl ;
    ::abort() ;
  }

  
  if ( (!(d1type == EvtSpinType::SCALAR || d2type == EvtSpinType::SCALAR))||
       (!((d2type==EvtSpinType::SCALAR)||(d2type==EvtSpinType::VECTOR)||(d2type==EvtSpinType::TENSOR)))||
       (!((d1type==EvtSpinType::SCALAR)||(d1type==EvtSpinType::VECTOR)||(d1type==EvtSpinType::TENSOR)))
       ) {
    report(ERROR,"EvtGen") << "EvtSSDCP generator expected "
                           << "one of the daugters to be a scalar, the other either scalar, vector, or tensor, found:"
			   << EvtPDL::name(getDaug(0)).c_str()<<" and "<<EvtPDL::name(getDaug(1)).c_str()<<endl;
    report(ERROR,"EvtGen") << "Will terminate execution!"<<endl;
    ::abort();
  }

  _dm=getArg(0)/EvtConst::c; //units of 1/mm

  _dgog=getArg(1);

  
  _qoverp=getArg(2)*EvtComplex(cos(getArg(3)),sin(getArg(3)));
  _poverq=1.0/_qoverp;

  _A_f=getArg(4)*EvtComplex(cos(getArg(5)),sin(getArg(5)));

  _Abar_f=getArg(6)*EvtComplex(cos(getArg(7)),sin(getArg(7)));
  
  if (getNArg()>=12){
    _eigenstate=false;
    _A_fbar=getArg(8)*EvtComplex(cos(getArg(9)),sin(getArg(9)));
    _Abar_fbar=getArg(10)*EvtComplex(cos(getArg(11)),sin(getArg(11)));
  }
  else{
    //I'm somewhat confused about this. For a CP eigenstate set the
    //amplitudes to the same. For a non CP eigenstate CPT invariance
    //is enforced. (ryd)
    if (
	(getDaug(0)==EvtPDL::chargeConj(getDaug(0))&&
	 getDaug(1)==EvtPDL::chargeConj(getDaug(1)))||
	(getDaug(0)==EvtPDL::chargeConj(getDaug(1))&&
	 getDaug(1)==EvtPDL::chargeConj(getDaug(0)))){
      _eigenstate=true;
    }else{
      _eigenstate=false;
      _A_fbar=conj(_Abar_f);
      _Abar_fbar=conj(_A_f);
    }
  }

  //FS: new check for z 
  if (getNArg()==14){ //FS Set _z parameter if provided else set it 0
    _z=EvtComplex(getArg(12),getArg(13));
  }
  else{
    _z=EvtComplex(0.0,0.0);
  }

  // FS substituted next 2 lines...


  //
  //  _gamma=EvtPDL::getctau(EvtPDL::getId("B0"));  //units of 1/mm
  //_dgamma=_gamma*0.5*_dgog;
  //
  // ...with:

  if ( ( getParentId() == EvtPDL::getId("B0") ) || 
       ( getParentId() == EvtPDL::getId("anti-B0") ) ) {
    _gamma=1./EvtPDL::getctau(EvtPDL::getId("B0")); //gamma/c (1/mm)
  }
  else{
    _gamma=1./EvtPDL::getctau(EvtPDL::getId("B_s0")) ;
  }

  _dgamma=_gamma*_dgog;  //dgamma/c (1/mm) 

  if (verbose()){
    report(INFO,"EvtGen") << "SSD_CP will generate CP/CPT violation:"
			  << endl << endl
			  << "    " << EvtPDL::name(getParentId()).c_str() << " --> "
			  << EvtPDL::name(getDaug(0)).c_str() << " + "
			  << EvtPDL::name(getDaug(1)).c_str() << endl << endl
			  << "using parameters:" << endl << endl
			  << "  delta(m)  = " << _dm << " hbar/ps" << endl
			  << "dGamma      = "  << _dgamma <<" ps-1" <<endl
			  << "       q/p  = " << _qoverp << endl  
			  << "        z  = " << _z << endl  
			  << "       tau  = " << 1./_gamma << " ps" << endl;
  }

}

void EvtSSDCP::initProbMax() {
  double theProbMax = 
    abs(_A_f) * abs(_A_f) +
    abs(_Abar_f) * abs(_Abar_f) +
    abs(_A_fbar) * abs(_A_fbar) +
    abs(_Abar_fbar) * abs(_Abar_fbar);

  if (_eigenstate) theProbMax*=2;

  EvtSpinType::spintype d2type=EvtPDL::getSpinType(getDaug(1));
  EvtSpinType::spintype d1type=EvtPDL::getSpinType(getDaug(0));
  if (d1type==EvtSpinType::TENSOR||d2type==EvtSpinType::TENSOR) theProbMax*=10;

  setProbMax(theProbMax);
}

void EvtSSDCP::decay( EvtParticle *p){

  static EvtId B0=EvtPDL::getId("B0");
  static EvtId B0B=EvtPDL::getId("anti-B0");
  
  static EvtId B0s = EvtPDL::getId("B_s0");
  static EvtId B0Bs = EvtPDL::getId("anti-B_s0");

  double t;
  EvtId other_b;
  EvtId daugs[2];

  int flip=0;
  if (!_eigenstate){
    if (EvtRandom::Flat(0.0,1.0)<0.5) flip=1;
  }

  if (!flip) {
    daugs[0]=getDaug(0);
    daugs[1]=getDaug(1);
  }
  else{
    daugs[0]=EvtPDL::chargeConj(getDaug(0));
    daugs[1]=EvtPDL::chargeConj(getDaug(1));
  }

  EvtParticle *d;
  p->initializePhaseSpace(2, daugs);

  EvtComplex amp;


  EvtCPUtil::OtherB(p,t,other_b,0.5); // t is c*Dt (mm)

  //if (flip) t=-t;

  //FS We assume DGamma=GammaLow-GammaHeavy and Dm=mHeavy-mLow
  EvtComplex expL=exp(-EvtComplex(-0.25*_dgamma*t,0.5*_dm*t));
  EvtComplex expH=exp(EvtComplex(-0.25*_dgamma*t,0.5*_dm*t));
  //FS Definition of gp and gm
  EvtComplex gp=0.5*(expL+expH);
  EvtComplex gm=0.5*(expL-expH);
  //FS Calculation os sqrt(1-z^2) 
  EvtComplex sqz=sqrt(abs(1-_z*_z))*exp(EvtComplex(0,arg(1-_z*_z)/2));
  
  //EvtComplex BB=0.5*(expL+expH);                  // <B0|B0(t)>
  //EvtComplex barBB=_qoverp*0.5*(expL-expH);       // <B0bar|B0(t)>
  //EvtComplex BbarB=_poverq*0.5*(expL-expH);       // <B0|B0bar(t)>
  //EvtComplex barBbarB=BB;                         // <B0bar|B0bar(t)>
  //  FS redefinition of these guys... (See BAD #188 eq.35 for ref.)
  //  q/p is taken as in the BaBar Phys. Book (opposite sign wrt ref.)
  EvtComplex BB=gp+_z*gm;                 // <B0|B0(t)>
  EvtComplex barBB=sqz*_qoverp*gm;       // <B0bar|B0(t)>
  EvtComplex BbarB=sqz*_poverq*gm;       // <B0|B0bar(t)>
  EvtComplex barBbarB=gp-_z*gm;           // <B0bar|B0bar(t)>

  if (!flip){
    if (other_b==B0B||other_b==B0Bs){
      //at t=0 we have a B0
      //report(INFO,"EvtGen") << "B0B"<<endl;
      amp=BB*_A_f+BbarB*_Abar_f;
      //std::cout << "noflip B0B tag:"<<amp<<std::endl;
      //amp=0.0;
    }
    if (other_b==B0||other_b==B0s){
      //report(INFO,"EvtGen") << "B0"<<endl;
      amp=barBB*_A_f+barBbarB*_Abar_f;
    }
  }else{
    if (other_b==B0||other_b==B0s){
      amp=barBB*_A_fbar+barBbarB*_Abar_fbar;
      //std::cout << "flip B0 tag:"<<amp<<std::endl;
      //amp=0.0;
    }
    if (other_b==B0B||other_b==B0Bs){
      amp=BB*_A_fbar+BbarB*_Abar_fbar;
    }
  }


  EvtVector4R p4_parent=p->getP4Restframe();
  double m_parent=p4_parent.mass();

  EvtSpinType::spintype d2type=EvtPDL::getSpinType(getDaug(1));

  EvtVector4R momv;
  EvtVector4R moms;

  if (d2type==EvtSpinType::SCALAR){
    d2type=EvtPDL::getSpinType(getDaug(0));
    d= p->getDaug(0);
    momv = d->getP4();
    moms = p->getDaug(1)->getP4();
  }
  else{
    d= p->getDaug(1);
    momv = d->getP4();
    moms = p->getDaug(0)->getP4();
  }


  if (d2type==EvtSpinType::SCALAR) {
    vertex(amp);
  }
  
  if (d2type==EvtSpinType::VECTOR) {
    
    double norm=momv.mass()/(momv.d3mag()*p->mass());

    //std::cout << amp << " " << norm << " " << p4_parent << d->getP4()<< std::endl;
    //    std::cout << EvtPDL::name(d->getId()) << " " << EvtPDL::name(p->getDaug(0)->getId()) << 
    //  " 1and2 " << EvtPDL::name(p->getDaug(1)->getId()) << std::endl;
    //std::cout << d->eps(0) << std::endl;
    //std::cout << d->epsParent(0) << std::endl;
    vertex(0,amp*norm*p4_parent*(d->epsParent(0)));
    vertex(1,amp*norm*p4_parent*(d->epsParent(1)));
    vertex(2,amp*norm*p4_parent*(d->epsParent(2)));
  
  }

  if (d2type==EvtSpinType::TENSOR) {

    double norm=d->mass()*d->mass()/(m_parent*d->getP4().d3mag()*d->getP4().d3mag());
 
   
   vertex(0,amp*norm*d->epsTensorParent(0).cont1(p4_parent)*p4_parent);
   vertex(1,amp*norm*d->epsTensorParent(1).cont1(p4_parent)*p4_parent);
   vertex(2,amp*norm*d->epsTensorParent(2).cont1(p4_parent)*p4_parent);
   vertex(3,amp*norm*d->epsTensorParent(3).cont1(p4_parent)*p4_parent);
   vertex(4,amp*norm*d->epsTensorParent(4).cont1(p4_parent)*p4_parent);
  
  }


  return ;
}
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) 2001 Caltech
	10	//
	11	// Module: EvtSSDCP.cc
	12	//
	13	// Description: See EvtSSDCP.hh
	14	//
	15	// Modification history:
	16	//
	17	// RYD August 12, 2001 Module created
	18	// F. Sandrelli, Fernando M-V March 1, 2002 Debugged and added z parameter (CPT violation)
	19	//------------------------------------------------------------------------
	20	//
	21	#include "EvtGenBase/EvtPatches.hh"
	22	#include <stdlib.h>
	23	#include "EvtGenBase/EvtParticle.hh"
	24	#include "EvtGenBase/EvtRandom.hh"
	25	#include "EvtGenBase/EvtGenKine.hh"
	26	#include "EvtGenBase/EvtCPUtil.hh"
	27	#include "EvtGenBase/EvtPDL.hh"
	28	#include "EvtGenBase/EvtReport.hh"
	29	#include "EvtGenBase/EvtVector4C.hh"
	30	#include "EvtGenBase/EvtTensor4C.hh"
	31	#include "EvtGenModels/EvtSSDCP.hh"
	32	#include <string>
	33	#include "EvtGenBase/EvtConst.hh"
	34	using std::endl;
	35
	36	EvtSSDCP::~EvtSSDCP() {}
	37
	38	std::string EvtSSDCP::getName(){
	39
	40	return "SSD_CP";
	41
	42	}
	43
	44
	45	EvtDecayBase* EvtSSDCP::clone(){
	46
	47	return new EvtSSDCP;
	48
	49	}
	50
	51	void EvtSSDCP::init(){
	52
	53	// check that there are 8 or 12 or 14 arguments
	54
	55	checkNArg(14,12,8);
	56	checkNDaug(2);
	57
	58	EvtSpinType::spintype d1type=EvtPDL::getSpinType(getDaug(0));
	59	EvtSpinType::spintype d2type=EvtPDL::getSpinType(getDaug(1));
	60
	61	// Check it is a B0 or B0s
	62	if ( ( getParentId() != EvtPDL::getId( "B0" ) )
	63	&& ( getParentId() != EvtPDL::getId( "anti-B0" ) )
	64	&& ( getParentId() != EvtPDL::getId( "B_s0" ) )
65	&& ( getParentId() != EvtPDL::getId( "anti-B_s0" ) ) ) {
66	report( ERROR , "EvtGen" ) << "EvtSSDCP only decays B0 and B0s"
67	<< std::endl ;
68	::abort() ;
69	}
70
71
72	if ( (!(d1type == EvtSpinType::SCALAR \|\| d2type == EvtSpinType::SCALAR))\|\|
73	(!((d2type==EvtSpinType::SCALAR)\|\|(d2type==EvtSpinType::VECTOR)\|\|(d2type==EvtSpinType::TENSOR)))\|\|
74	(!((d1type==EvtSpinType::SCALAR)\|\|(d1type==EvtSpinType::VECTOR)\|\|(d1type==EvtSpinType::TENSOR)))
75	) {
76	report(ERROR,"EvtGen") << "EvtSSDCP generator expected "
77	<< "one of the daugters to be a scalar, the other either scalar, vector, or tensor, found:"
78	<< EvtPDL::name(getDaug(0)).c_str()<<" and "<<EvtPDL::name(getDaug(1)).c_str()<<endl;
79	report(ERROR,"EvtGen") << "Will terminate execution!"<<endl;
80	::abort();
81	}
82
83	_dm=getArg(0)/EvtConst::c; //units of 1/mm
84
85	_dgog=getArg(1);
86
87
88	_qoverp=getArg(2)*EvtComplex(cos(getArg(3)),sin(getArg(3)));
89	_poverq=1.0/_qoverp;
90
91	_A_f=getArg(4)*EvtComplex(cos(getArg(5)),sin(getArg(5)));
92
93	_Abar_f=getArg(6)*EvtComplex(cos(getArg(7)),sin(getArg(7)));
94
95	if (getNArg()>=12){
96	_eigenstate=false;
97	_A_fbar=getArg(8)*EvtComplex(cos(getArg(9)),sin(getArg(9)));
98	_Abar_fbar=getArg(10)*EvtComplex(cos(getArg(11)),sin(getArg(11)));
99	}
100	else{
101	//I'm somewhat confused about this. For a CP eigenstate set the
102	//amplitudes to the same. For a non CP eigenstate CPT invariance
103	//is enforced. (ryd)
104	if (
105	(getDaug(0)==EvtPDL::chargeConj(getDaug(0))&&
106	getDaug(1)==EvtPDL::chargeConj(getDaug(1)))\|\|
107	(getDaug(0)==EvtPDL::chargeConj(getDaug(1))&&
108	getDaug(1)==EvtPDL::chargeConj(getDaug(0)))){
109	_eigenstate=true;
110	}else{
111	_eigenstate=false;
112	_A_fbar=conj(_Abar_f);
113	_Abar_fbar=conj(_A_f);
114	}
115	}
116
117	//FS: new check for z
118	if (getNArg()==14){ //FS Set _z parameter if provided else set it 0
119	_z=EvtComplex(getArg(12),getArg(13));
120	}
121	else{
122	_z=EvtComplex(0.0,0.0);
123	}
124
125	// FS substituted next 2 lines...
126
127
128	//
129	// _gamma=EvtPDL::getctau(EvtPDL::getId("B0")); //units of 1/mm
130	//_dgamma=_gamma0.5_dgog;
131	//
132	// ...with:
133
134	if ( ( getParentId() == EvtPDL::getId("B0") ) \|\|
135	( getParentId() == EvtPDL::getId("anti-B0") ) ) {
136	_gamma=1./EvtPDL::getctau(EvtPDL::getId("B0")); //gamma/c (1/mm)
137	}
138	else{
139	_gamma=1./EvtPDL::getctau(EvtPDL::getId("B_s0")) ;
140	}
141
142	_dgamma=_gamma*_dgog; //dgamma/c (1/mm)
143
144	if (verbose()){
145	report(INFO,"EvtGen") << "SSD_CP will generate CP/CPT violation:"
146	<< endl << endl
147	<< " " << EvtPDL::name(getParentId()).c_str() << " --> "
148	<< EvtPDL::name(getDaug(0)).c_str() << " + "
149	<< EvtPDL::name(getDaug(1)).c_str() << endl << endl
150	<< "using parameters:" << endl << endl
151	<< " delta(m) = " << _dm << " hbar/ps" << endl
152	<< "dGamma = " << _dgamma <<" ps-1" <<endl
153	<< " q/p = " << _qoverp << endl
154	<< " z = " << _z << endl
155	<< " tau = " << 1./_gamma << " ps" << endl;
156	}
157
158	}
159
160	void EvtSSDCP::initProbMax() {
161	double theProbMax =
162	abs(_A_f) * abs(_A_f) +
163	abs(_Abar_f) * abs(_Abar_f) +
164	abs(_A_fbar) * abs(_A_fbar) +
165	abs(_Abar_fbar) * abs(_Abar_fbar);
166
167	if (_eigenstate) theProbMax*=2;
168
169	EvtSpinType::spintype d2type=EvtPDL::getSpinType(getDaug(1));
170	EvtSpinType::spintype d1type=EvtPDL::getSpinType(getDaug(0));
171	if (d1type==EvtSpinType::TENSOR\|\|d2type==EvtSpinType::TENSOR) theProbMax*=10;
172
173	setProbMax(theProbMax);
174	}
175
176	void EvtSSDCP::decay( EvtParticle *p){
177
178	static EvtId B0=EvtPDL::getId("B0");
179	static EvtId B0B=EvtPDL::getId("anti-B0");
180
181	static EvtId B0s = EvtPDL::getId("B_s0");
182	static EvtId B0Bs = EvtPDL::getId("anti-B_s0");
183
184	double t;
185	EvtId other_b;
186	EvtId daugs[2];
187
188	int flip=0;
189	if (!_eigenstate){
190	if (EvtRandom::Flat(0.0,1.0)<0.5) flip=1;
191	}
192
193	if (!flip) {
194	daugs[0]=getDaug(0);
195	daugs[1]=getDaug(1);
196	}
197	else{
198	daugs[0]=EvtPDL::chargeConj(getDaug(0));
199	daugs[1]=EvtPDL::chargeConj(getDaug(1));
200	}
201
202	EvtParticle *d;
203	p->initializePhaseSpace(2, daugs);
204
205	EvtComplex amp;
206
207
208	EvtCPUtil::OtherB(p,t,other_b,0.5); // t is c*Dt (mm)
209
210	//if (flip) t=-t;
211
212	//FS We assume DGamma=GammaLow-GammaHeavy and Dm=mHeavy-mLow
213	EvtComplex expL=exp(-EvtComplex(-0.25_dgammat,0.5_dmt));
214	EvtComplex expH=exp(EvtComplex(-0.25_dgammat,0.5_dmt));
215	//FS Definition of gp and gm
216	EvtComplex gp=0.5*(expL+expH);
217	EvtComplex gm=0.5*(expL-expH);
218	//FS Calculation os sqrt(1-z^2)
219	EvtComplex sqz=sqrt(abs(1-_z_z))exp(EvtComplex(0,arg(1-_z*_z)/2));
220
221	//EvtComplex BB=0.5*(expL+expH); // <B0\|B0(t)>
222	//EvtComplex barBB=_qoverp0.5(expL-expH); // <B0bar\|B0(t)>
223	//EvtComplex BbarB=_poverq0.5(expL-expH); // <B0\|B0bar(t)>
224	//EvtComplex barBbarB=BB; // <B0bar\|B0bar(t)>
225	// FS redefinition of these guys... (See BAD #188 eq.35 for ref.)
226	// q/p is taken as in the BaBar Phys. Book (opposite sign wrt ref.)
227	EvtComplex BB=gp+_z*gm; // <B0\|B0(t)>
228	EvtComplex barBB=sqz_qoverpgm; // <B0bar\|B0(t)>
229	EvtComplex BbarB=sqz_poverqgm; // <B0\|B0bar(t)>
230	EvtComplex barBbarB=gp-_z*gm; // <B0bar\|B0bar(t)>
231
232	if (!flip){
233	if (other_b==B0B\|\|other_b==B0Bs){
234	//at t=0 we have a B0
235	//report(INFO,"EvtGen") << "B0B"<<endl;
236	amp=BB_A_f+BbarB_Abar_f;
237	//std::cout << "noflip B0B tag:"<<amp<<std::endl;
238	//amp=0.0;
239	}
240	if (other_b==B0\|\|other_b==B0s){
241	//report(INFO,"EvtGen") << "B0"<<endl;
242	amp=barBB_A_f+barBbarB_Abar_f;
243	}
244	}else{
245	if (other_b==B0\|\|other_b==B0s){
246	amp=barBB_A_fbar+barBbarB_Abar_fbar;
247	//std::cout << "flip B0 tag:"<<amp<<std::endl;
248	//amp=0.0;
249	}
250	if (other_b==B0B\|\|other_b==B0Bs){
251	amp=BB_A_fbar+BbarB_Abar_fbar;
252	}
253	}
254
255
256	EvtVector4R p4_parent=p->getP4Restframe();
257	double m_parent=p4_parent.mass();
258
259	EvtSpinType::spintype d2type=EvtPDL::getSpinType(getDaug(1));
260
261	EvtVector4R momv;
262	EvtVector4R moms;
263
264	if (d2type==EvtSpinType::SCALAR){
265	d2type=EvtPDL::getSpinType(getDaug(0));
266	d= p->getDaug(0);
267	momv = d->getP4();
268	moms = p->getDaug(1)->getP4();
269	}
270	else{
271	d= p->getDaug(1);
272	momv = d->getP4();
273	moms = p->getDaug(0)->getP4();
274	}
275
276
277
278	if (d2type==EvtSpinType::SCALAR) {
279	vertex(amp);
280	}
281
282	if (d2type==EvtSpinType::VECTOR) {
283
284	double norm=momv.mass()/(momv.d3mag()*p->mass());
285
286	//std::cout << amp << " " << norm << " " << p4_parent << d->getP4()<< std::endl;
287	// std::cout << EvtPDL::name(d->getId()) << " " << EvtPDL::name(p->getDaug(0)->getId()) <<
288	// " 1and2 " << EvtPDL::name(p->getDaug(1)->getId()) << std::endl;
289	//std::cout << d->eps(0) << std::endl;
290	//std::cout << d->epsParent(0) << std::endl;
291	vertex(0,ampnormp4_parent*(d->epsParent(0)));
292	vertex(1,ampnormp4_parent*(d->epsParent(1)));
293	vertex(2,ampnormp4_parent*(d->epsParent(2)));
294
295	}
296
297	if (d2type==EvtSpinType::TENSOR) {
298
299	double norm=d->mass()d->mass()/(m_parentd->getP4().d3mag()*d->getP4().d3mag());
300
301
302	vertex(0,ampnormd->epsTensorParent(0).cont1(p4_parent)*p4_parent);
303	vertex(1,ampnormd->epsTensorParent(1).cont1(p4_parent)*p4_parent);
304	vertex(2,ampnormd->epsTensorParent(2).cont1(p4_parent)*p4_parent);
305	vertex(3,ampnormd->epsTensorParent(3).cont1(p4_parent)*p4_parent);
306	vertex(4,ampnormd->epsTensorParent(4).cont1(p4_parent)*p4_parent);
307
308	}
309
310
311	return ;
312	}
313