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#include "TH1D.h"
#include "TH2D.h"
#include "THStack.h"
#include "TGraph.h"
#include "TTree.h"
#include "TChain.h"
#include "TFile.h"
#include "TCanvas.h"
#include "TROOT.h"
#include "TStyle.h"
#include "TColor.h"
#include "TLorentzVector.h"
#include "TRandom3.h"
#include "TLegend.h"
#include "RooDataHist.h"
#include "RooRealVar.h"
#include "RooPlot.h"
#include "RooGaussian.h"
#include "RooExponential.h"
#include "RooRealConstant.h"
#include "RooAddPdf.h"
#include "RooFitResult.h"
#include "RooProduct.h"
#include "RooCrystalBall.h"
#include "RooBreitWigner.h"
#include "RooArgSet.h"
#include "RooFFTConvPdf.h"
#include "RooNovosibirsk.h"
#include <string>
#include <iostream>
#include <cmath>
const int nBins = 70;
const Double_t MASS_HIST_MIN = 5100.;const Double_t MASS_HIST_MAX = 6000.;const Double_t MASS_HIST_FIT_MIN = 5100.;const Double_t MASS_HIST_FIT_MAX = 6000.;
const Double_t K_MASS = 493.677;
void CreateRooFitAndDraw(TH1D *hist, int fitting_entries);
const char* TITLE = "SpruceRD_BuToHpMuMu (#pi^{+} #rightarrow K^{+})";const char* FILE_NAME = "SpruceRD_BuToHpMuMu_Pip2Kp";const char* MASS_LITERAL = "m(#pi^{+}_{(#rightarrow K^{+})}#mu^{+}#mu^{-})";
int analysis_fullstream_bu2hpmumu(){ TChain *data_chain = new TChain("BuToHpMuMu/DecayTree"); data_chain->Add("/auto/data/pfeiffer/inclusive_detached_dilepton/data_samples/spruce_magdown_2023_v0r1_tuple_90000000_2023_v0r0p6288631.root"); data_chain->Add("/auto/data/pfeiffer/inclusive_detached_dilepton/data_samples/spruce_magdown_2023_v0_tuple_90000000_v0r0p6288631.root");
Float_t B_BPVFDCHI2, B_BPVIPCHI2, L1_BPVIPCHI2, L2_BPVIPCHI2, L1_PT, L2_PT, Jpsi_BPVFDCHI2, Hp_PT, Hp_BPVIPCHI2, Hp_P;
Double_t L1_PID_MU, L2_PID_MU, B_CHI2VXNDOF, Jpsi_MAXDOCACHI2, Jpsi_CHI2DOF, Hp_PID_K, Jpsi_M, B_M;
Bool_t L1_ISMUON, L2_ISMUON, Hlt2RD_BuToKpMuMuDecision, Hlt2_InclDetDiMuon_4BodyDecision, Hlt2_InclDetDiMuon_3BodyDecision, Hlt2_InclDetDiMuonDecision, Hlt1TrackMVADecision, Hlt1TwoTrackMVADecision;
data_chain->SetBranchAddress("B_M", &B_M);
data_chain->SetBranchAddress("B_BPVFDCHI2", &B_BPVFDCHI2);
data_chain->SetBranchAddress("B_BPVIPCHI2", &B_BPVIPCHI2);
data_chain->SetBranchAddress("L1_BPVIPCHI2", &L1_BPVIPCHI2); data_chain->SetBranchAddress("L2_BPVIPCHI2", &L2_BPVIPCHI2); data_chain->SetBranchAddress("L1_PID_MU", &L1_PID_MU); data_chain->SetBranchAddress("L2_PID_MU", &L2_PID_MU); data_chain->SetBranchAddress("L1_ISMUON", &L1_ISMUON); data_chain->SetBranchAddress("L2_ISMUON", &L2_ISMUON); data_chain->SetBranchAddress("L1_PT", &L1_PT); data_chain->SetBranchAddress("L2_PT", &L2_PT); data_chain->SetBranchAddress("B_CHI2VXNDOF", &B_CHI2VXNDOF); data_chain->SetBranchAddress("Jpsi_MAXDOCACHI2", &Jpsi_MAXDOCACHI2); data_chain->SetBranchAddress("Jpsi_CHI2DOF", &Jpsi_CHI2DOF);
data_chain->SetBranchAddress("Hp_PT", &Hp_PT); data_chain->SetBranchAddress("Hp_BPVIPCHI2", &Hp_BPVIPCHI2); data_chain->SetBranchAddress("Hp_P", &Hp_P); data_chain->SetBranchAddress("Hp_PID_K", &Hp_PID_K);
data_chain->SetBranchAddress("Jpsi_BPVFDCHI2", &Jpsi_BPVFDCHI2); data_chain->SetBranchAddress("Jpsi_M", &Jpsi_M);
data_chain->SetBranchAddress("Hlt2RD_BuToKpMuMuDecision", &Hlt2RD_BuToKpMuMuDecision); data_chain->SetBranchAddress("Hlt2_InclDetDiMuon_4BodyDecision", &Hlt2_InclDetDiMuon_4BodyDecision); data_chain->SetBranchAddress("Hlt2_InclDetDiMuon_3BodyDecision", &Hlt2_InclDetDiMuon_3BodyDecision); data_chain->SetBranchAddress("Hlt2_InclDetDiMuonDecision", &Hlt2_InclDetDiMuonDecision); data_chain->SetBranchAddress("Hlt1TrackMVADecision", &Hlt1TrackMVADecision); data_chain->SetBranchAddress("Hlt1TwoTrackMVADecision", &Hlt1TwoTrackMVADecision);
Float_t L1_PX, L1_PY, L1_PZ, L1_ENERGY, L2_PX, L2_PY, L2_PZ, L2_ENERGY, Hp_PX, Hp_PY, Hp_PZ, Hp_ENERGY; data_chain->SetBranchAddress("L1_PX", &L1_PX); data_chain->SetBranchAddress("L1_PY", &L1_PY); data_chain->SetBranchAddress("L1_PZ", &L1_PZ); data_chain->SetBranchAddress("L1_ENERGY", &L1_ENERGY); data_chain->SetBranchAddress("L2_PX", &L2_PX); data_chain->SetBranchAddress("L2_PY", &L2_PY); data_chain->SetBranchAddress("L2_PZ", &L2_PZ); data_chain->SetBranchAddress("L2_ENERGY", &L2_ENERGY); data_chain->SetBranchAddress("Hp_PX", &Hp_PX); data_chain->SetBranchAddress("Hp_PY", &Hp_PY); data_chain->SetBranchAddress("Hp_PZ", &Hp_PZ); data_chain->SetBranchAddress("Hp_ENERGY", &Hp_ENERGY);
TH1D *h1_B_M = new TH1D("h1_B_M", "B Mass", nBins, MASS_HIST_MIN, MASS_HIST_MAX);
unsigned int entries = data_chain->GetEntries(); unsigned int fitting_entries = 0; for (unsigned int i = 0; i < entries; i++) { data_chain->GetEntry(i);
TVector3 K_momentum(Hp_PX, Hp_PY, Hp_PZ); double K_energy = TMath::Sqrt(TMath::Sq(K_MASS) + K_momentum.Mag2()); TLorentzVector K_4v(K_momentum, K_energy); TLorentzVector l1_4v(L1_PX, L1_PY, L1_PZ, L1_ENERGY); TLorentzVector l2_4v(L2_PX, L2_PY, L2_PZ, L2_ENERGY); Double_t reconstructed_B_Mass = (K_4v + l1_4v + l2_4v).M();
if ((((B_BPVFDCHI2 > 36) & (B_CHI2VXNDOF<16) & ( B_BPVIPCHI2<25) & (Jpsi_MAXDOCACHI2 < 36 )&(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) & (Jpsi_CHI2DOF<9 ) & (Jpsi_BPVFDCHI2>16) & (Jpsi_M<5500) & (Hp_PT>400) &( Hp_BPVIPCHI2>6) & (Hp_PT>400) & (Hp_BPVIPCHI2>6) & (Hp_P>2000) & (Hp_PID_K > -4)) & (Hlt2RD_BuToKpMuMuDecision==1) &(((Hlt2_InclDetDiMuon_4BodyDecision==1) | (Hlt2_InclDetDiMuon_3BodyDecision==1) | (Hlt2_InclDetDiMuonDecision==1))))&(TMath::Abs(Jpsi_M - 3096.9) < 100) & ((Hlt1TrackMVADecision==1) | (Hlt1TwoTrackMVADecision==1))) { h1_B_M->Fill(reconstructed_B_Mass);
if (MASS_HIST_FIT_MIN <= reconstructed_B_Mass && reconstructed_B_Mass <= MASS_HIST_FIT_MAX) { fitting_entries++; } }
if (i % 10000 == 0) { std::cout << "[" << "SpruceRD_BuToHpMuMu" << "] Processed event: " << i << " (" << TString::Format("%.2f", ((double)i / (double)entries) * 100.) << "%)" << std::endl; } }
TCanvas *c1 = new TCanvas("c1", "c1", 0, 0, 800, 600); h1_B_M->Draw(); c1->Draw(); c1->SaveAs(TString::Format("images/root_hist_%s_bmass.png", FILE_NAME).Data());
CreateRooFitAndDraw(h1_B_M, fitting_entries);
return 0;}
void CreateRooFitAndDraw(TH1D *hist, int fitting_entries){ RooRealVar roo_var_mass("var_mass", "B Mass Variable", MASS_HIST_FIT_MIN, MASS_HIST_FIT_MAX); roo_var_mass.setRange("fitting_range", MASS_HIST_FIT_MIN, MASS_HIST_FIT_MAX);
RooDataHist roohist_B_M("roohist_B_M", "B Mass Histogram", roo_var_mass, RooFit::Import(*hist));
RooPlot *roo_frame_mass = roo_var_mass.frame(RooFit::Title(TITLE)); roohist_B_M.plotOn(roo_frame_mass, RooFit::Binning(nBins), RooFit::Name("B Mass Distribution")); roo_frame_mass->GetXaxis()->SetTitle(MASS_LITERAL);
TCanvas *c = new TCanvas("roofit_c", "roofit_c", 0, 0, 800, 600);
roo_frame_mass->Draw();
TLegend *leg1 = new TLegend(0.65, 0.7, 0.87, 0.8); leg1->SetFillColor(kWhite); leg1->SetLineColor(kBlack);
leg1->AddEntry((TObject*)0, TString::Format("Entries: %d", fitting_entries), "");
leg1->Draw();
c->Draw(); c->SaveAs(TString::Format("images/roofit_hist_%s_bmass.png", FILE_NAME).Data());}
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