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_I140818 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(PLUTO_1979_I140818);
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");
25    }
26
27
28    /// Perform the per-event analysis
29    void analyze(const Event& event) {
30      const FinalState& fs = apply<FinalState>(event, "FS");
31
32      map<long,int> nCount;
33      int ntotal(0);
34      for (const Particle& p : fs.particles()) {
35        nCount[p.pid()] += 1;
36        ++ntotal;
37      }
38      if(nCount[-13]==1 and nCount[13]==1 && ntotal==2+nCount[22]) {
39        // mu+mu- + photons
40        vetoEvent;
41      }
42      else {
43        // everything else
44        _c_hadrons->fill();
45      }
46
47    }
48
49
50    /// Normalise histograms etc., after the run
51    void finalize() {
52      double fact = crossSection()/ sumOfWeights() /nanobarn;
53      double sig_h = _c_hadrons->val()*fact;
54      double err_h = _c_hadrons->err()*fact;
55      Estimate1DPtr hadrons;
56      book(hadrons, 2, 1, 1);
57      for (auto& b : hadrons->bins()) {
58        if (inRange(sqrtS()/GeV, b.xMin(), b.xMax())) {
59          b.set(sig_h, err_h);
60        }
61      }
62    }
63
64    /// @}
65
66
67    /// @name Histograms
68    /// @{
69    CounterPtr _c_hadrons;
70    /// @}
71
72
73  };
74
75
76  RIVET_DECLARE_PLUGIN(PLUTO_1979_I140818);
77
78
79}