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264 lines
9.5 KiB
264 lines
9.5 KiB
#include "TH1D.h"
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#include "TH2D.h"
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#include "THStack.h"
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#include "TGraph.h"
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#include "TTree.h"
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#include "TChain.h"
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#include "TFile.h"
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#include "TCanvas.h"
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#include "TROOT.h"
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#include "TStyle.h"
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#include "TColor.h"
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#include "TLorentzVector.h"
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#include "TRandom3.h"
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#include "TLegend.h"
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#include "TLatex.h"
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#include "RooDataHist.h"
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#include "RooRealVar.h"
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#include "RooPlot.h"
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#include "RooGaussian.h"
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#include "RooExponential.h"
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#include "RooRealConstant.h"
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#include "RooAddPdf.h"
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#include "RooFitResult.h"
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#include "RooProduct.h"
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#include "RooCrystalBall.h"
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#include "RooBreitWigner.h"
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#include "RooArgSet.h"
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#include "RooFFTConvPdf.h"
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#include "RooNovosibirsk.h"
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#include <string>
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#include <iostream>
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#include <cmath>
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const int nBins = 70;
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const Double_t MASS_HIST_MIN = 5100.;
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const Double_t MASS_HIST_MAX = 5700.;
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const Double_t MASS_HIST_FIT_MIN = 5100.;
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const Double_t MASS_HIST_FIT_MAX = 5700.;
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const char* TITLE = "SpruceRD_B0ToHpHmMuMu (#pi^{+} #rightarrow K^{+})";
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const char* FILE_NAME = "SpruceRD_B0ToHpHmMuMu_Pip2Kp";
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const char* MASS_LITERAL = "m(#pi^{+}_{(#rightarrow K^{+})}#pi^{-}#mu^{+}#mu^{-})";
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const Double_t K_MASS = 493.677;
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void CreateRooFitAndDraw(TH1D *hist, int fitting_entries);
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int analysis_fullstream_b02hphmmumu()
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{
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TChain *data_chain = new TChain("B0ToHpHmMuMu/DecayTree");
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data_chain->Add("/auto/data/pfeiffer/inclusive_detached_dilepton/data_samples/spruce_magdown_2023_v0r1_tuple_90000000_2023_v0r0p6288631.root");
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data_chain->Add("/auto/data/pfeiffer/inclusive_detached_dilepton/data_samples/spruce_magdown_2023_v0_tuple_90000000_v0r0p6288631.root");
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Float_t B0_BPVFDCHI2,
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B0_BPVIPCHI2,
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L1_BPVIPCHI2,
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L2_BPVIPCHI2,
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L1_PT,
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L2_PT,
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Jpsi_BPVFDCHI2,
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Hp_PT,
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Hp_BPVIPCHI2,
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Hp_P,
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Hm_PT,
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Hm_BPVIPCHI2,
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Hm_P,
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Res_PT,
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Res_BPVIPCHI2,
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Res_P;
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Double_t L1_PID_MU,
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L2_PID_MU,
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B0_CHI2VXNDOF,
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Jpsi_MAXDOCACHI2,
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Jpsi_CHI2DOF,
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Res_CHI2DOF,
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Hp_PID_K,
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Hm_PID_K,
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Jpsi_M,
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B0_M,
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Res_MAXDOCACHI2,
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Res_M;
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Bool_t L1_ISMUON,
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L2_ISMUON,
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Hlt2RD_B0ToKpPimMuMuDecision,
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Hlt2_InclDetDiMuon_4BodyDecision,
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Hlt2_InclDetDiMuon_3BodyDecision,
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Hlt2_InclDetDiMuonDecision,
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Hlt1TrackMVADecision,
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Hlt1TwoTrackMVADecision;
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data_chain->SetBranchAddress("B0_M", &B0_M);
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data_chain->SetBranchAddress("B0_BPVFDCHI2", &B0_BPVFDCHI2);
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data_chain->SetBranchAddress("B0_BPVIPCHI2", &B0_BPVIPCHI2);
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data_chain->SetBranchAddress("L1_BPVIPCHI2", &L1_BPVIPCHI2);
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data_chain->SetBranchAddress("L2_BPVIPCHI2", &L2_BPVIPCHI2);
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data_chain->SetBranchAddress("L1_PID_MU", &L1_PID_MU);
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data_chain->SetBranchAddress("L2_PID_MU", &L2_PID_MU);
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data_chain->SetBranchAddress("L1_ISMUON", &L1_ISMUON);
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data_chain->SetBranchAddress("L2_ISMUON", &L2_ISMUON);
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data_chain->SetBranchAddress("L1_PT", &L1_PT);
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data_chain->SetBranchAddress("L2_PT", &L2_PT);
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data_chain->SetBranchAddress("B0_CHI2VXNDOF", &B0_CHI2VXNDOF);
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data_chain->SetBranchAddress("Jpsi_MAXDOCACHI2", &Jpsi_MAXDOCACHI2);
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data_chain->SetBranchAddress("Jpsi_CHI2DOF", &Jpsi_CHI2DOF);
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data_chain->SetBranchAddress("Res_CHI2DOF", &Res_CHI2DOF);
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data_chain->SetBranchAddress("Hp_PT", &Hp_PT);
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data_chain->SetBranchAddress("Hp_BPVIPCHI2", &Hp_BPVIPCHI2);
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data_chain->SetBranchAddress("Hp_P", &Hp_P);
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data_chain->SetBranchAddress("Hp_PID_K", &Hp_PID_K);
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data_chain->SetBranchAddress("Hm_PT", &Hm_PT);
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data_chain->SetBranchAddress("Hm_BPVIPCHI2", &Hm_BPVIPCHI2);
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data_chain->SetBranchAddress("Hm_P", &Hm_P);
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data_chain->SetBranchAddress("Hm_PID_K", &Hm_PID_K);
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data_chain->SetBranchAddress("Res_PT", &Res_PT);
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data_chain->SetBranchAddress("Res_BPVIPCHI2", &Res_BPVIPCHI2);
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data_chain->SetBranchAddress("Res_P", &Res_P);
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data_chain->SetBranchAddress("Res_MAXDOCACHI2", &Res_MAXDOCACHI2);
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data_chain->SetBranchAddress("Res_M", &Res_M);
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data_chain->SetBranchAddress("Jpsi_BPVFDCHI2", &Jpsi_BPVFDCHI2);
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data_chain->SetBranchAddress("Jpsi_M", &Jpsi_M);
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data_chain->SetBranchAddress("Hlt2RD_B0ToKpPimMuMuDecision", &Hlt2RD_B0ToKpPimMuMuDecision);
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data_chain->SetBranchAddress("Hlt2_InclDetDiMuon_4BodyDecision", &Hlt2_InclDetDiMuon_4BodyDecision);
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data_chain->SetBranchAddress("Hlt2_InclDetDiMuon_3BodyDecision", &Hlt2_InclDetDiMuon_3BodyDecision);
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data_chain->SetBranchAddress("Hlt2_InclDetDiMuonDecision", &Hlt2_InclDetDiMuonDecision);
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data_chain->SetBranchAddress("Hlt1TrackMVADecision", &Hlt1TrackMVADecision);
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data_chain->SetBranchAddress("Hlt1TwoTrackMVADecision", &Hlt1TwoTrackMVADecision);
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Float_t
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L1_PX, L1_PY, L1_PZ, L1_ENERGY,
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L2_PX, L2_PY, L2_PZ, L2_ENERGY,
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Hp_PX, Hp_PY, Hp_PZ, Hp_ENERGY,
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Hm_PX, Hm_PY, Hm_PZ, Hm_ENERGY;
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data_chain->SetBranchAddress("L1_PX", &L1_PX);
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data_chain->SetBranchAddress("L1_PY", &L1_PY);
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data_chain->SetBranchAddress("L1_PZ", &L1_PZ);
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data_chain->SetBranchAddress("L1_ENERGY", &L1_ENERGY);
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data_chain->SetBranchAddress("L2_PX", &L2_PX);
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data_chain->SetBranchAddress("L2_PY", &L2_PY);
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data_chain->SetBranchAddress("L2_PZ", &L2_PZ);
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data_chain->SetBranchAddress("L2_ENERGY", &L2_ENERGY);
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data_chain->SetBranchAddress("Hp_PX", &Hp_PX);
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data_chain->SetBranchAddress("Hp_PY", &Hp_PY);
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data_chain->SetBranchAddress("Hp_PZ", &Hp_PZ);
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data_chain->SetBranchAddress("Hp_ENERGY", &Hp_ENERGY);
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data_chain->SetBranchAddress("Hm_PX", &Hm_PX);
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data_chain->SetBranchAddress("Hm_PY", &Hm_PY);
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data_chain->SetBranchAddress("Hm_PZ", &Hm_PZ);
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data_chain->SetBranchAddress("Hm_ENERGY", &Hm_ENERGY);
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TH1D *h1_B0_M = new TH1D("h1_B0_M", TITLE, nBins, MASS_HIST_MIN, MASS_HIST_MAX);
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unsigned int entries = data_chain->GetEntries();
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unsigned int fitting_entries = 0;
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for (unsigned int i = 0; i < entries; i++)
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{
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data_chain->GetEntry(i);
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TLorentzVector l1_4v(L1_PX, L1_PY, L1_PZ, L1_ENERGY);
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TLorentzVector l2_4v(L2_PX, L2_PY, L2_PZ, L2_ENERGY);
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// Pi+ -> K+
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TVector3 K_momentum(Hp_PX, Hp_PY, Hp_PZ);
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double K_energy = TMath::Sqrt(TMath::Sq(K_MASS) + K_momentum.Mag2());
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TLorentzVector Pi_4v(Hm_PX, Hm_PY, Hm_PZ, Hm_ENERGY);
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// Pi- -> K-
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// TVector3 K_momentum(Hm_PX, Hm_PY, Hm_PZ);
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// double K_energy = TMath::Sqrt(TMath::Sq(K_MASS) + K_momentum.Mag2());
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// TLorentzVector Pi_4v(Hp_PX, Hp_PY, Hp_PZ, Hp_ENERGY);
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TLorentzVector K_4v(K_momentum, K_energy);
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Double_t reconstructed_Res_Mass = (K_4v + Pi_4v).M();
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Double_t reconstructed_B0_Mass = (K_4v + Pi_4v + l1_4v + l2_4v).M();
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if ((
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(B0_BPVFDCHI2 > 64) & (B0_CHI2VXNDOF < 9) & (B0_BPVIPCHI2 < 25) &
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//
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(Jpsi_MAXDOCACHI2 < 36) &
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//
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(L1_BPVIPCHI2 > 9) & (L2_BPVIPCHI2 > 9) & (L1_PID_MU > -3) & (L2_PID_MU > -3) & (L1_ISMUON == 1) & (L2_ISMUON == 1) & (L1_PT > 350) & (L2_PT > 350) &
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//
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(Jpsi_CHI2DOF < 9) & (Jpsi_BPVFDCHI2 > 16) & (Jpsi_M < 5500) &
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//
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(Res_PT > 400) & (Res_MAXDOCACHI2 < 36) & (reconstructed_Res_Mass < 2600) & (Res_CHI2DOF < 25) & (Res_BPVIPCHI2 > 4) &
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//
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(Hm_BPVIPCHI2 > 6) & (Hm_PT > 250) & (Hm_P > 2000) & (Hm_PID_K < 0) &
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//
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(Hp_BPVIPCHI2 > 6) & (Hp_PT > 250) & (Hp_P > 2000) & (Hp_PID_K > 0)
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) &
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//
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(Hlt2RD_B0ToKpPimMuMuDecision) & ((Hlt2_InclDetDiMuon_4BodyDecision) | (Hlt2_InclDetDiMuon_3BodyDecision) | (Hlt2_InclDetDiMuonDecision)))
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{
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if ((TMath::Abs(Jpsi_M - 3096.9) < 100) & (Hlt1TrackMVADecision) & (Hlt1TwoTrackMVADecision))
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{
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h1_B0_M->Fill(reconstructed_B0_Mass);
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if (MASS_HIST_FIT_MIN <= reconstructed_B0_Mass && reconstructed_B0_Mass <= MASS_HIST_FIT_MAX)
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{
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fitting_entries++;
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}
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}
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}
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if (i % 10000 == 0)
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{
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std::cout << "["
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<< FILE_NAME
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<< "] Processed event: " << i << " (" << TString::Format("%.2f", ((double)i / (double)entries) * 100.) << "%)" << std::endl;
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}
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}
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h1_B0_M->GetXaxis()->SetTitle(MASS_LITERAL);
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TCanvas *c1 = new TCanvas("c1", "c1", 0, 0, 800, 600);
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h1_B0_M->Draw();
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c1->Draw();
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c1->SaveAs(TString::Format("images/root_hist_%s_bmass.pdf", FILE_NAME).Data());
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CreateRooFitAndDraw(h1_B0_M, fitting_entries);
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return 0;
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}
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void CreateRooFitAndDraw(TH1D *hist, int fitting_entries)
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{
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RooRealVar roo_var_mass("var_mass", "B0 Mass Variable", MASS_HIST_FIT_MIN, MASS_HIST_FIT_MAX);
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roo_var_mass.setRange("fitting_range", MASS_HIST_FIT_MIN, MASS_HIST_FIT_MAX);
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RooDataHist roohist_B0_M("roohist_B0_M", "B0 Mass Histogram", roo_var_mass, RooFit::Import(*hist));
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RooPlot *roo_frame_mass = roo_var_mass.frame(RooFit::Title(TITLE));
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roohist_B0_M.plotOn(roo_frame_mass, RooFit::Binning(nBins), RooFit::Name("B Mass Distribution"));
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roo_frame_mass->GetXaxis()->SetTitle(MASS_LITERAL);
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TCanvas *c = new TCanvas("roofit_c", "roofit_c", 0, 0, 800, 600);
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roo_frame_mass->Draw();
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TLegend *leg1 = new TLegend(0.65, 0.7, 0.87, 0.8);
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leg1->SetFillColor(kWhite);
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leg1->SetLineColor(kBlack);
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leg1->AddEntry((TObject *)0, TString::Format("Entries: %d", fitting_entries), "");
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leg1->Draw();
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c->Draw();
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c->SaveAs(TString::Format("images/roofit_hist_%s_bmass.pdf", FILE_NAME).Data());
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}
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