1// -*- C++ -*-
  2#include "Rivet/Analysis.hh"
  3#include "Rivet/Projections/UnstableParticles.hh"
  4
  5namespace Rivet {
  6
  7
  8  /// @brief strange fraction at 7,8,13 TeV
  9  class LHCB_2019_I1760257 : public Analysis {
 10  public:
 11
 12    /// Constructor
 13    RIVET_DEFAULT_ANALYSIS_CTOR(LHCB_2019_I1760257);
 14
 15
 16    /// @name Analysis methods
 17    /// @{
 18
 19    /// Book histograms and initialise projections before the run
 20    void init() {
 21      // projection
 22      declare(UnstableParticles(), "UFS");
 23      //histograms
 24      for(unsigned int ix=0;ix<2;++ix) {
 25	book(_c_B[ix],"TMP/c_B_"+toString(ix+1),
 26             refData<YODA::BinnedEstimate<string> >(1,1,1));
 27	book(_h_pT[ix],"TMP/h_pT_"+toString(ix+1),refData(5,1,1));
 28	for(unsigned int iy=0;iy<3;++iy) {
 29	  book(_h_pL[ix][iy],"TMP/h_pL_"+toString(ix+1)+"_"+toString(iy+1),refData(3,1,1+iy));
 30	}
 31	for(unsigned int iy=0;iy<5;++iy) {
 32	  book(_h_kin[ix][iy],"TMP/h_kin_"+toString(ix+1)+"_"+toString(iy+1),refData(4,1,1+iy));
 33	}
 34      }
 35      if (isCompatibleWithSqrtS(7000))       _ie=0;
 36      else if (isCompatibleWithSqrtS(8000))  _ie=1;
 37      else if (isCompatibleWithSqrtS(13000)) _ie=2;
 38      else  {
 39      	throw Error("Invalid CMS energy for LHCB_2019_I1760257");
 40      }
 41    }
 42
 43
 44    /// Perform the per-event analysis
 45    void analyze(const Event& event) {
 46      if (_edges.empty()) _edges = _c_B[0]->xEdges();
 47      for( const Particle& p : apply<UnstableParticles>(event, "UFS").particles(Cuts::abspid==521 or
 48      										Cuts::abspid==531)) {
 49      	// kinematic region
 50      	// rapidity cuts
 51      	double y = p.rapidity(), eta = p.eta();
 52      	if(y<2. || y> 4.5 || eta<2. || eta>6.5) continue;
 53      	// momentum cuts
 54      	double pT = p.perp(), pL = p.momentum().z(), pTot=p.momentum().p3().mod();
 55      	if(pT<0.5 || pT>40. || pTot<20. || pTot>700. || pL<20. || pL>700.) continue;
 56      	// type of meson
 57      	unsigned int imeson = (p.abspid()%100)/10 - 2;
 58      	_c_B [imeson]->fill(_edges[_ie]);
 59        if(_ie==2) _c_B [imeson]->fill(_edges[3]);
 60      	_h_pT[imeson]->fill(pT);
 61      	if (pL<75.)       _h_pL[imeson][0]->fill(pT);
 62      	else if (pL<125.) _h_pL[imeson][1]->fill(pT);
 63      	else if (pL<700.) _h_pL[imeson][2]->fill(pT);
 64      	_h_kin[imeson][0]->fill(pTot);
 65      	_h_kin[imeson][1]->fill(pL  );
 66      	_h_kin[imeson][2]->fill(pT  );
 67      	_h_kin[imeson][3]->fill(eta );
 68      	_h_kin[imeson][4]->fill(y   );
 69      }
 70    }
 71
 72
 73    /// Normalise histograms etc., after the run
 74    void finalize() {
 75      // ratio of branching ratios from PDSG 2020
 76      double brRatio = 1.08e-3/1.02e-3;
 77      for(unsigned int iy=0;iy<5;++iy) {
 78      	Estimate1DPtr tmp;
 79      	book(tmp,4,1,iy+1);
 80      	divide(_h_kin[1][iy],_h_kin[0][iy],tmp);
 81	tmp->scale(brRatio);
 82      	if(iy>=3) continue;
 83      	book(tmp,3,1,iy+1);
 84      	divide(_h_pL [1][iy],_h_pL [0][iy],tmp);
 85	tmp->scale(brRatio);
 86      }
 87      Estimate1DPtr tmp;
 88      book(tmp,5,1,1+_ie);
 89      divide(_h_pT[1],_h_pT[0],tmp);
 90      tmp->scale(brRatio);
 91      // ratio
 92      BinnedEstimatePtr<string> ratio;
 93      book(ratio,1,1,1);
 94      divide(_c_B[1],_c_B[0],ratio);
 95      ratio->scale(brRatio);
 96    }
 97
 98    /// @}
 99
100
101    /// @name Histograms
102    /// @{
103    size_t _ie;
104    vector<string> _edges;
105    BinnedHistoPtr<string> _c_B[2];
106    Histo1DPtr _h_pL[2][3],_h_kin[2][5];
107    Histo1DPtr _h_pT[2];
108    /// @}
109
110  };
111
112
113  RIVET_DECLARE_PLUGIN(LHCB_2019_I1760257);
114
115}