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sHEPGen.h
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1 #ifndef __SHEPGEN_H__
2 #define __SHEPGEN_H__
3 
4 #include <fun4all/SubsysReco.h>
6 
7 #if !defined(__CINT__) || defined(__CLING__)
8 #include <gsl/gsl_rng.h>
9 #endif
10 
11 #include <iostream>
12 #include <string>
13 
14 class PHCompositeNode;
15 class PHHepMCGenEvent;
16 
17 class HGenManager;
18 class HLorentzVector;
19 
20 namespace HepMC
21 {
22  class GenEvent;
23 };
24 
25 class sHEPGen : public SubsysReco, public PHHepMCGenHelper
26 {
27  public:
28  sHEPGen(const std::string &name = "sHEPGen");
29  virtual ~sHEPGen();
30 
31  int Init(PHCompositeNode *topNode);
32  int process_event(PHCompositeNode *topNode);
33  int End(PHCompositeNode *topNode);
34 
35  void set_datacard_file(const char *cfg_file)
36  {
37  if (cfg_file) _datacardFile = cfg_file;
38  }
39 
40  void set_momentum_electron(double emom)
41  {
42  _p_electron_lab = emom;
43  }
44 
45  void set_momentum_hadron(double hmom)
46  {
47  _p_hadron_lab = hmom;
48  }
49 
50  void beam_vertex_parameters(double beamX,
51  double beamY,
52  double beamZ,
53  double beamXsigma,
54  double beamYsigma,
55  double beamZsigma)
56  {
57  set_vertex_distribution_mean(beamX, beamY, beamZ, 0);
58  set_vertex_distribution_width(beamXsigma, beamYsigma, beamZsigma, 0);
59  }
60 
61  private:
64  void printlogo();
65 
66 
68 
70  double _p_hadron_lab;
71 
72  HLorentzVector *_p4_electron_lab;
73  HLorentzVector *_p4_hadron_lab;
74  HLorentzVector *_p4_hadron_lab_invert;
75  HLorentzVector *_p4_electron_prest;
76  HLorentzVector *_p4_hadron_prest;
77 
78  // HEPGen++
79  HGenManager *_hgenManager;
80 
82 };
83 
84 #endif /* __SHEPGEN_H__ */