1// -*- C++ -*-
 2#include "Rivet/Analysis.hh"
 3#include "Rivet/Projections/FinalState.hh"
 4
 5namespace Rivet {
 6
 7
 8  /// @brief 
 9  class TASSO_1979_I140303 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(TASSO_1979_I140303);
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      // counters for R
24      book(_c_hadrons, "/TMP/sigma_hadrons", refData<YODA::BinnedEstimate<int>>(1,1,1));
25      book(_c_muons,   "/TMP/sigma_muons"  , refData<YODA::BinnedEstimate<int>>(1,1,1));
26    }
27
28
29    /// Perform the per-event analysis
30    void analyze(const Event& event) {
31      const FinalState& fs = apply<FinalState>(event, "FS");
32
33      map<long,int> nCount;
34      int ntotal(0);
35      for (const Particle& p : fs.particles()) {
36        nCount[p.pid()] += 1;
37        ++ntotal;
38      }
39      if(nCount[-13]==1 and nCount[13]==1 && ntotal==2+nCount[22]) {
40        // mu+mu- + photons
41        _c_muons->fill(round(sqrtS()/GeV));
42      }
43      else {
44        // everything else
45        _c_hadrons->fill(round(sqrtS()/GeV));
46      }
47    }
48
49
50    /// Normalise histograms etc., after the run
51    void finalize() {
52      BinnedEstimatePtr<int> mult;
53      book(mult, 1, 1, 1);
54      divide(_c_hadrons,_c_muons,mult);
55    }
56
57    /// @}
58
59
60    /// @name Histograms
61    /// @{
62    BinnedHistoPtr<int> _c_hadrons, _c_muons;
63    /// @}
64
65
66  };
67
68
69  RIVET_DECLARE_PLUGIN(TASSO_1979_I140303);
70
71
72}