EvtGen 2.2.0
Monte Carlo generator of particle decays, in particular the weak decays of heavy flavour particles such as B mesons.
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EvtdFunctionSingle.hh
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1
2/***********************************************************************
3* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
4* *
5* This file is part of EvtGen. *
6* *
7* EvtGen is free software: you can redistribute it and/or modify *
8* it under the terms of the GNU General Public License as published by *
9* the Free Software Foundation, either version 3 of the License, or *
10* (at your option) any later version. *
11* *
12* EvtGen is distributed in the hope that it will be useful, *
13* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15* GNU General Public License for more details. *
16* *
17* You should have received a copy of the GNU General Public License *
18* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
19***********************************************************************/
20
21#ifndef EVTDFUNCTIONSINGLE_HH
22#define EVTDFUNCTIONSINGLE_HH
23
24// Description:Evaluation of one Wigner d-Functions
25
27 public:
30
31 void init( int j, int m1, int m2 );
32
33 double d( int j, int m1, int m2, double theta );
34
35 private:
36 int fact( int n );
37
38 int m_j;
39 int m_m1;
40 int m_m2;
41
42 double* m_coef;
43
44 int m_kmin;
45 int m_kmax;
46};
47
48#endif
double d(int j, int m1, int m2, double theta)
void init(int j, int m1, int m2)