1// -*- C++ -*-
 2#include "Rivet/Analysis.hh"
 3#include "Rivet/Projections/ChargedFinalState.hh"
 4
 5namespace Rivet {
 6
 7
 8  /// @brief Add a short analysis description here
 9  class JADE_1979_I142874 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(JADE_1979_I142874);
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(ChargedFinalState(), "FS");
24      if     ( isCompatibleWithSqrtS(22.0*GeV) ) _sqs = "22.0";
25      else if( isCompatibleWithSqrtS(27.7*GeV) ) _sqs = "27.7";
26      else if( isCompatibleWithSqrtS(30.0*GeV) ) _sqs = "30.0";
27      else if( isCompatibleWithSqrtS(31.6*GeV) ) _sqs = "31.6";
28      else
29        MSG_WARNING("CoM energy of events sqrt(s) = " << sqrtS()/GeV
30                    << " doesn't match any available analysis energy .");
31      // Book histograms
32      book(_mult, 2, 1, 1);
33
34    }
35
36
37    /// Perform the per-event analysis
38    void analyze(const Event& event) {
39      const ChargedFinalState& fs = apply<ChargedFinalState>(event, "FS");
40      _mult->fill(_sqs,fs.particles().size());
41    }
42
43
44    /// Normalise histograms etc., after the run
45    void finalize() {
46    }
47    /// @}
48
49
50    /// @name Histograms
51    /// @{
52    BinnedProfilePtr<string> _mult;
53    string _sqs;
54    /// @}
55
56
57  };
58
59
60  RIVET_DECLARE_PLUGIN(JADE_1979_I142874);
61
62
63}