1// -*- C++ -*-
 2#include "Rivet/Analysis.hh"
 3#include "Rivet/Projections/ChargedFinalState.hh"
 4
 5namespace Rivet {
 6
 7
 8  /// @brief Average multiplcity at a range of energies
 9  class JADE_1983_I190818 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(JADE_1983_I190818);
14
15
16    /// @name Analysis methods
17    //@{
18
19    /// Book histograms and initialise projections before the run
20    void init() {
21      const ChargedFinalState cfs;
22      declare(cfs, "CFS");
23      if( !(isCompatibleWithSqrtS(12.0) ||
24	    isCompatibleWithSqrtS(30.0) ||
25	    isCompatibleWithSqrtS(35.0) )) {
26        MSG_WARNING("CoM energy of events sqrt(s) = " << sqrtS()/GeV
27                    << " doesn't match any available analysis energy .");
28      }
29      book(_counter, "/TMP/MULT");
30      book(_mult, 1, 1, 1);
31    }
32
33
34    /// Perform the per-event analysis
35    void analyze(const Event& event) {
36      const FinalState& cfs = apply<FinalState>(event, "CFS");
37      MSG_DEBUG("Total charged multiplicity = " << cfs.size());
38      _counter->fill(cfs.size());
39    }
40
41
42    /// Normalise histograms etc., after the run
43    void finalize() {
44      scale(_counter,1./sumOfWeights());
45
46      double val = _counter->val();
47      double err = _counter->err();
48      
49      Scatter2D tempScat(refData(1, 1, 1));
50      
51      for (size_t b = 0; b < tempScat.numPoints(); b++) {
52        const double x  = tempScat.point(b).x();
53        pair<double,double> ex = tempScat.point(b).xErrs();
54        pair<double,double> ex2 = ex;
55        if(ex2.first ==0.) ex2. first=0.0001;
56        if(ex2.second==0.) ex2.second=0.0001;
57        if (inRange(sqrtS()/GeV, x-ex2.first, x+ex2.second)) {
58          _mult->addPoint(x, val, ex, make_pair(err,err));
59        }
60        else {
61          _mult->addPoint(x, 0., ex, make_pair(0.,.0));
62        }
63      }
64    }
65    //@}
66
67  private:
68
69    // Histogram
70    CounterPtr _counter;
71    Scatter2DPtr _mult;
72
73  };
74
75  // The hook for the plugin system
76  RIVET_DECLARE_PLUGIN(JADE_1983_I190818);
77
78}