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 PLUTO_1979_I140294 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(PLUTO_1979_I140294);
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      const FinalState& fs = apply<FinalState>(event, "FS");
33
34      map<long,int> nCount;
35      int ntotal(0);
36      for (const Particle& p : fs.particles()) {
37	nCount[p.pid()] += 1;
38	++ntotal;
39      }
40      // mu+mu- + photons
41      if(nCount[-13]==1 and nCount[13]==1 &&
42	 ntotal==2+nCount[22])
43	_c_muons->fill();
44      // everything else
45      else
46	_c_hadrons->fill();
47    }
48
49
50    /// Normalise histograms etc., after the run
51    void finalize() {
52      Estimate0D R = *_c_hadrons/ *_c_muons;
53      double fact = crossSection()/ sumOfWeights() /picobarn;
54      double sig_h = _c_hadrons->val()*fact;
55      double err_h = _c_hadrons->err()*fact;
56      double sig_m = _c_muons  ->val()*fact;
57      double err_m = _c_muons  ->err()*fact;
58      for (unsigned int ix=1;ix<3;++ix) {
59        std::ostringstream title;
60        title << "d0" << ix << "_sigma";
61        Estimate1DPtr hadrons;
62        book(hadrons, title.str() + "_hadrons");
63        Estimate1DPtr muons;
64        book(muons, title.str() + "_muons"  );
65        Estimate1DPtr mult;
66        book(mult, ix, 1, 1);
67        for (auto& b : mult->bins()) {
68          if (inRange(sqrtS()/GeV, b.xMin(), b.xMax())) {
69            b.set(R.val(), R.errPos());
70            hadrons->bin(b.index()).set(sig_h, err_h);
71            muons  ->bin(b.index()).set(sig_m, err_m);
72          }
73        }
74      }
75    }
76
77    /// @}
78
79
80    /// @name Histograms
81    /// @{
82    CounterPtr _c_hadrons, _c_muons;
83    /// @}
84
85
86  };
87
88
89  RIVET_DECLARE_PLUGIN(PLUTO_1979_I140294);
90
91
92}