1// -*- C++ -*-
 2#include "Rivet/Analysis.hh"
 3#include "Rivet/Projections/FinalState.hh"
 4
 5namespace Rivet {
 6
 7
 8  /// @brief e+e- > 3pi+3pi-
 9  class DM1_1981_I166353 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(DM1_1981_I166353);
14
15
16    /// @name Analysis methods
17    /// @{
18
19    /// Book histograms and initialise projections before the run
20    void init() {
21      // Initialise and register projections
22      declare(FinalState(), "FS");
23      book(_num3pip3pim, "TMP/num3pip3pim",refData(1,1,1));
24    }
25
26
27    /// Perform the per-event analysis
28    void analyze(const Event& event) {
29      const FinalState& fs = apply<FinalState>(event, "FS");
30      int ntotal(0);
31      for (const Particle& p : fs.particles()) {
32	if(abs(p.pid())!=211) vetoEvent;
33	++ntotal;
34      }
35      if(ntotal!=6) vetoEvent;
36      _num3pip3pim->fill(sqrtS()/GeV);
37    }
38
39
40    /// Normalise histograms etc., after the run
41    void finalize() {
42      scale(_num3pip3pim,crossSection()/ sumOfWeights() /nanobarn);
43      Estimate1DPtr mult;
44      book(mult, 1, 1, 1);
45      barchart(_num3pip3pim,mult);
46    }
47    /// @}
48
49    /// @name Histograms
50    /// @{
51    Histo1DPtr _num3pip3pim;
52    /// @}
53
54  };
55
56
57  RIVET_DECLARE_PLUGIN(DM1_1981_I166353);
58
59
60}