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 TASSO_1984_I199468 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(TASSO_1984_I199468);
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
24      // Book histograms
25      book(_c_hadrons, "/TMP/sigma_hadrons");
26      book(_c_muons, "/TMP/sigma_muons");
27    }
28
29
30    /// Perform the per-event analysis
31    void analyze(const Event& event) {
32
33      const FinalState& fs = apply<FinalState>(event, "FS");
34
35      map<long,int> nCount;
36      int ntotal(0);
37      for (const Particle& p : fs.particles()) {
38	nCount[p.pid()] += 1;
39	++ntotal;
40      }
41      // mu+mu- + photons
42      if(nCount[-13]==1 and nCount[13]==1 &&
43	 ntotal==2+nCount[22])
44	_c_muons->fill();
45      // everything else
46      else
47	_c_hadrons->fill();
48
49    }
50
51    /// Normalise histograms etc., after the run
52    void finalize() {
53      Estimate0D R = *_c_hadrons/ *_c_muons;
54      double fact = crossSection()/ sumOfWeights() /picobarn;
55      double sig_h = _c_hadrons->val()*fact;
56      double err_h = _c_hadrons->err()*fact;
57      double sig_m = _c_muons  ->val()*fact;
58      double err_m = _c_muons  ->err()*fact;
59      for (unsigned int ix=1;ix<3;++ix) {
60        std::ostringstream title;
61        title << "d0" << ix;
62        Estimate1DPtr hadrons;
63        book(hadrons, title.str()+"_sigma_hadrons");
64        Estimate1DPtr muons;
65        book(muons, title.str()+"_sigma_muons"  );
66        Estimate1DPtr mult;
67        book(mult, ix, 1, 1);
68        for (auto& b : mult->bins()) {
69          if (inRange(sqrtS()/GeV, b.xMin(), b.xMax())) {
70            b.set(R.val(), R.errPos());
71            hadrons->bin(b.index()).set(sig_h, err_h);
72            muons  ->bin(b.index()).set(sig_m, err_m);
73          }
74        }
75      }
76    }
77    /// @}
78
79    /// @name Histograms
80    /// @{
81    CounterPtr _c_hadrons, _c_muons;
82    /// @}
83
84  };
85
86
87  RIVET_DECLARE_PLUGIN(TASSO_1984_I199468);
88
89
90}