]>
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) 1998 Caltech, UCSB | |
10 | // | |
11 | // Module: EvtGenModels/EvtBToVlnuBall.cc | |
12 | // | |
13 | // Description: B->Xu l nu with the Ball/Zwicky decay model | |
14 | // Xu is a vector (rho, rho0, omega) | |
15 | // | |
16 | // | |
17 | // Modification history: | |
18 | // | |
19 | // Wells Wulsin 2008 Aug 14 Module created | |
20 | // | |
21 | //------------------------------------------------------------------------ | |
22 | // | |
23 | #include "EvtGenBase/EvtPatches.hh" | |
24 | #include <stdlib.h> | |
25 | #include <assert.h> | |
26 | #include "EvtGenBase/EvtParticle.hh" | |
27 | #include "EvtGenBase/EvtGenKine.hh" | |
28 | #include "EvtGenBase/EvtPDL.hh" | |
29 | #include "EvtGenBase/EvtReport.hh" | |
30 | #include "EvtGenModels/EvtBToVlnuBall.hh" | |
31 | #include "EvtGenModels/EvtBToVlnuBallFF.hh" | |
32 | #include "EvtGenBase/EvtSemiLeptonicVectorAmp.hh" | |
33 | #include "EvtGenBase/EvtSemiLeptonicScalarAmp.hh" | |
34 | #include <string> | |
35 | using std::endl; | |
36 | ||
37 | EvtBToVlnuBall::EvtBToVlnuBall(): | |
38 | _Ballmodel(0) | |
39 | ,_calcamp(0) | |
40 | {} | |
41 | ||
42 | EvtBToVlnuBall::~EvtBToVlnuBall() { | |
43 | delete _Ballmodel; | |
44 | _Ballmodel=0; | |
45 | delete _calcamp; | |
46 | _calcamp=0; | |
47 | } | |
48 | ||
49 | ||
50 | std::string EvtBToVlnuBall::getName(){ | |
51 | return "BTOVLNUBALL"; | |
52 | } | |
53 | ||
54 | ||
55 | EvtDecayBase* EvtBToVlnuBall::clone(){ | |
56 | return new EvtBToVlnuBall; | |
57 | } | |
58 | ||
59 | ||
60 | void EvtBToVlnuBall::decay( EvtParticle *p ){ | |
61 | ||
62 | p->initializePhaseSpace(getNDaug(),getDaugs()); | |
63 | _calcamp->CalcAmp(p,_amp2,_Ballmodel); | |
64 | ||
65 | ||
66 | ||
67 | ||
68 | } | |
69 | ||
70 | void EvtBToVlnuBall::initProbMax(){ | |
71 | ||
72 | EvtId parnum,mesnum,lnum,nunum; | |
73 | ||
74 | parnum = getParentId(); | |
75 | mesnum = getDaug(0); | |
76 | lnum = getDaug(1); | |
77 | nunum = getDaug(2); | |
78 | ||
79 | double mymaxprob = _calcamp->CalcMaxProb(parnum,mesnum, | |
80 | lnum,nunum,_Ballmodel); | |
81 | ||
82 | setProbMax(mymaxprob); | |
83 | ||
84 | } | |
85 | ||
86 | ||
87 | void EvtBToVlnuBall::init(){ | |
88 | ||
89 | checkNDaug(3); | |
90 | ||
91 | //We expect the parent to be a scalar | |
92 | //and the daughters to be X lepton neutrino | |
93 | checkSpinParent(EvtSpinType::SCALAR); | |
94 | ||
95 | checkSpinDaughter(1,EvtSpinType::DIRAC); | |
96 | checkSpinDaughter(2,EvtSpinType::NEUTRINO); | |
97 | ||
98 | EvtSpinType::spintype d1type = EvtPDL::getSpinType(getDaug(0)); | |
99 | if ( d1type==EvtSpinType::VECTOR) { | |
100 | checkNArg(8); // the number of arguments needed for the Ball model | |
101 | _Ballmodel = new EvtBToVlnuBallFF(getArg(0),getArg(1),getArg(2),getArg(3),getArg(4),getArg(5),getArg(6),getArg(7)); | |
102 | _calcamp = new EvtSemiLeptonicVectorAmp; | |
103 | } else { | |
104 | report(ERROR,"EvtGen") << "Ball model handles only vector meson daughters. Sorry." << endl; | |
105 | ::abort(); | |
106 | } | |
107 | ||
108 | ||
109 | } | |
110 |