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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: EvtGen/EvtAmp.hh | |
12 | // | |
13 | // Description:This is the (new) amplitude class. | |
14 | // | |
15 | // Modification history: | |
16 | // | |
17 | // DJL/RYD May 29, 1997 Module created | |
18 | // | |
19 | //------------------------------------------------------------------------ | |
20 | ||
21 | #ifndef EVTAMP_HH | |
22 | #define EVTAMP_HH | |
23 | ||
24 | #include "EvtGenBase/EvtComplex.hh" | |
25 | #include "EvtGenBase/EvtPatches.hh" | |
26 | ||
27 | class EvtSpinDensity; | |
28 | class EvtId; | |
29 | ||
30 | class EvtAmp { | |
31 | ||
32 | public: | |
33 | ||
34 | EvtAmp(); | |
35 | EvtAmp(const EvtAmp& amp); | |
36 | ||
37 | void init(EvtId p,int ndaug,EvtId *daug); | |
38 | ||
39 | void setAmp(int *ind,const EvtComplex& amp); | |
40 | ||
41 | const EvtComplex& getAmp(int *ind)const; | |
42 | ||
43 | EvtSpinDensity getSpinDensity(); | |
44 | ||
45 | EvtSpinDensity contract(int i,const EvtAmp& a); | |
46 | EvtAmp contract(int i, const EvtSpinDensity& rho); | |
47 | ||
48 | //sum over the i:th daugther of a1 and contract with parent of a2 | |
49 | EvtAmp contract(int i, const EvtAmp& a1,const EvtAmp& a2); | |
50 | ||
51 | ||
52 | EvtSpinDensity getForwardSpinDensity(EvtSpinDensity *rho_list,int k); | |
53 | EvtSpinDensity getBackwardSpinDensity(EvtSpinDensity *rho_list); | |
54 | ||
55 | EvtAmp& operator=(const EvtAmp& amp); | |
56 | ||
57 | ||
58 | /** | |
59 | * sets the amplitudes calculated in the decay objects | |
60 | */ | |
61 | void vertex(const EvtComplex& amp); | |
62 | ||
63 | /** | |
64 | * sets the amplitudes calculated in the decay objects | |
65 | */ | |
66 | void vertex(int i1, const EvtComplex& amp); | |
67 | ||
68 | /** | |
69 | * sets the amplitudes calculated in the decay objects | |
70 | */ | |
71 | void vertex(int i1, int i2, const EvtComplex& amp); | |
72 | ||
73 | /** | |
74 | * sets the amplitudes calculated in the decay objects | |
75 | */ | |
76 | void vertex(int i1, int i2, int i3, const EvtComplex& amp); | |
77 | ||
78 | /** | |
79 | * sets the amplitudes calculated in the decay objects | |
80 | */ | |
81 | void vertex(int *i1, const EvtComplex& amp); | |
82 | ||
83 | ||
84 | void dump(); | |
85 | ||
86 | private: | |
87 | ||
88 | friend class EvtDecayAmp; | |
89 | friend class EvtKstarstargamma; | |
90 | ||
91 | void setNDaug(int n); | |
92 | void setNState(int parent_states,int *daug_states); | |
93 | ||
94 | // the amplitudes | |
95 | EvtComplex _amp[125]; | |
96 | ||
97 | // the number of daughters | |
98 | int _ndaug; | |
99 | ||
100 | // the number of states of the parent | |
101 | int _pstates; | |
102 | ||
103 | // number of states of the daughter | |
104 | int dstates[10]; | |
105 | ||
106 | // the nontrivial index of the daughter | |
107 | int _dnontrivial[10]; | |
108 | ||
109 | // number of nontrivial daugts+parent | |
110 | int _nontrivial; | |
111 | ||
112 | // compact nstates | |
113 | int _nstate[5]; | |
114 | ||
115 | }; | |
116 | ||
117 | ||
118 | #endif | |
119 |