1// -*- C++ -*-
 2#include "Rivet/Analysis.hh"
 3#include "Rivet/Projections/UnstableParticles.hh"
 4
 5namespace Rivet {
 6
 7
 8  /// @brief D meson production at 7 TeV
 9  class ATLAS_2016_I1408878 : public Analysis {
10  public:
11
12    /// Constructor
13    RIVET_DEFAULT_ANALYSIS_CTOR(ATLAS_2016_I1408878);
14
15
16    /// @name Analysis methods
17    /// @{
18
19    /// Book histograms and initialise projections before the run
20    void init() {
21      // projections
22      declare(UnstableParticles(Cuts::abspid==411 or Cuts::abspid==413 or Cuts::abspid==431), "UFS");
23      // histograms
24      for (unsigned int ix=0; ix<3; ++ix) {
25        book(_h_tot[ix], "TMP/_total_"+toString(ix+1), refData(1, 1, 1+ix));
26        book(_e_tot[ix], 1, 1, 1+ix);
27      }
28      for (unsigned int ix=0; ix<2; ++ix) {
29        book(_h_pT[ix], 2, 1, 1+ix);
30        for (unsigned int iy=0; iy<2; ++iy) {
31          book(_h_y[iy][ix], 3+ix, 1, 1+iy);
32        }
33      }
34    }
35
36
37    /// Perform the per-event analysis
38    void analyze(const Event& event) {
39      // Final state of unstable particles to get particle spectra
40      const UnstableParticles& ufs = apply<UnstableParticles>(event, "UFS");
41      for (const Particle& p : ufs.particles()) {
42        if (p.children().size()==1) continue;
43        const double abseta = p.abseta();
44        if (abseta>2.1) continue;
45        const double pT = p.perp();
46        if (pT<3.5 || pT>100.) continue;
47
48        unsigned int itype=0;
49        if (p.abspid()==411) itype=1;
50        else if(p.abspid()==431) itype=2;
51        _h_tot[itype]->fill(pT);
52        if (itype<2) {
53          _h_pT[itype]->fill(pT);
54          if (pT<20.)  _h_y[itype][0]->fill(abseta);
55          else         _h_y[itype][1]->fill(abseta);
56        }
57      }
58    }
59
60
61    /// Normalise histograms etc., after the run
62    void finalize() {
63      const double factor = crossSection()/microbarn/sumOfWeights();
64      for (unsigned int ix=0;ix<2;++ix) {
65        scale(_h_tot[ix],factor);
66        scale(_h_pT[ix],factor);
67        scale(_h_y[ix][0],factor);
68        scale(_h_y[ix][1],1000.*factor);
69      }
70      scale(_h_tot[2],factor);
71      for (unsigned int ix=0;ix<3;++ix) {
72        barchart(_h_tot[ix], _e_tot[ix]);
73      }
74    }
75
76    /// @}
77
78
79    /// @name Histograms
80    /// @{
81    Histo1DPtr _h_pT[2],_h_y[2][2],_h_tot[3];
82    Estimate1DPtr _e_tot[3];
83    /// @}
84
85
86  };
87
88
89  RIVET_DECLARE_PLUGIN(ATLAS_2016_I1408878);
90
91}