1// -*- C++ -*-
 2#include "Rivet/Analysis.hh"
 3#include "Rivet/Projections/FinalState.hh"
 4
 5namespace Rivet {
 6
 7
 8  /// @brief Add a short analysis description here
 9  class CMD3_2016_I1395968 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(CMD3_2016_I1395968);
14
15
16    /// @name Analysis methods
17    /// @{
18
19    /// Book histograms and initialise projections before the run
20    void init() {
21
22      // Initialise and register projections
23      declare(FinalState(), "FS");
24      book(_cKpKmpippim, "TMP/KpKmpippim", refData(1,1,6));
25    }
26
27
28    /// Perform the per-event analysis
29    void analyze(const Event& event) {
30      const FinalState& fs = apply<FinalState>(event, "FS");
31
32      map<long,int> nCount;
33      int ntotal(0);
34      for (const Particle& p : fs.particles()) {
35	nCount[p.pid()] += 1;
36	++ntotal;
37      }
38
39      if(ntotal!=4) vetoEvent;
40      if(nCount[321]==1 && nCount[-321]==1 && nCount[211]==1 && nCount[-211]==1)
41	_cKpKmpippim->fill(sqrtS()/MeV);
42    }
43
44
45    /// Normalise histograms etc., after the run
46    void finalize() {
47      scale(_cKpKmpippim, crossSection()/ sumOfWeights() /nanobarn);
48      Estimate1DPtr mult;
49      book(mult, 1, 1, 6);
50      barchart(_cKpKmpippim,mult);
51    }
52
53    /// @}
54
55
56    /// @name Histograms
57    /// @{
58    Histo1DPtr _cKpKmpippim;
59    /// @}
60
61
62  };
63
64
65  RIVET_DECLARE_PLUGIN(CMD3_2016_I1395968);
66
67
68}