1 //--------------------------------------------------------------------------
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.
8 // Copyright Information: See EvtGen/COPYRIGHT
9 // Copyright (C) 1998 Caltech, UCSB
13 // Description: Routine to implement semileptonic decays according
16 // Modification history:
18 // DJL/RYD September 25, 1996 Module created
20 //------------------------------------------------------------------------
22 #include "EvtGenBase/EvtPatches.hh"
24 #include "EvtGenBase/EvtParticle.hh"
25 #include "EvtGenBase/EvtGenKine.hh"
26 #include "EvtGenBase/EvtPDL.hh"
27 #include "EvtGenBase/EvtReport.hh"
28 #include "EvtGenModels/EvtISGW.hh"
30 #include "EvtGenModels/EvtISGWFF.hh"
31 #include "EvtGenBase/EvtSemiLeptonicScalarAmp.hh"
32 #include "EvtGenBase/EvtSemiLeptonicVectorAmp.hh"
33 #include "EvtGenBase/EvtSemiLeptonicTensorAmp.hh"
35 EvtISGW::~EvtISGW() {}
37 std::string EvtISGW::getName(){
44 EvtDecayBase* EvtISGW::clone(){
50 void EvtISGW::decay( EvtParticle *p ){
53 p->initializePhaseSpace(getNDaug(),getDaugs());
55 calcamp->CalcAmp(p,_amp2,isgwffmodel);
67 //We expect the parent to be a scalar
68 //and the daughters to be X lepton neutrino
70 EvtSpinType::spintype mesontype=EvtPDL::getSpinType(getDaug(0));
72 checkSpinParent(EvtSpinType::SCALAR);
73 checkSpinDaughter(1,EvtSpinType::DIRAC);
74 checkSpinDaughter(2,EvtSpinType::NEUTRINO);
77 isgwffmodel = new EvtISGWFF;
79 if ( mesontype==EvtSpinType::SCALAR ) {
80 calcamp = new EvtSemiLeptonicScalarAmp;
82 if ( mesontype==EvtSpinType::VECTOR ) {
83 calcamp = new EvtSemiLeptonicVectorAmp;
85 if ( mesontype==EvtSpinType::TENSOR ) {
86 calcamp = new EvtSemiLeptonicTensorAmp;