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105 lines
3.3 KiB
105 lines
3.3 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 "TLorentzVector.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 <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 = 4000.;
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const Double_t MASS_HIST_MAX = 8500.;
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const Double_t J_PSI_MASS = 3096.916;
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const Double_t K_MASS = 493.677;
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std::vector<RooPlot*> CreateRooFit(TH1D *hist);
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bool inRange(double value, double center, double low_intvl, double up_intvl) {
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return center - low_intvl < value && value < center + up_intvl;
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}
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bool inRange(double value, double center, double intvl) {
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return inRange(value, center, intvl, intvl);
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}
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int subs_mass()
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{
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// files to load
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std::vector<std::string> data_filenames =
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{
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"/auto/data/pfeiffer/inclusive_detached_dilepton/data_samples/spruce_magdown_2023_v0r1_tuple_90000000_2023_v0r0p6288631.root"};
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TChain *data_chain = new TChain("BuToHpMuMu/DecayTree");
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for (unsigned int i = 0; i < data_filenames.size(); i++)
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{
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data_chain->Add(data_filenames.at(i).c_str());
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}
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Double_t Jpsi_M, L1_M, L2_M, Hp_M;
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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;
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data_chain->SetBranchAddress("Jpsi_M", &Jpsi_M);
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data_chain->SetBranchAddress("L1_M", &L1_M);
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data_chain->SetBranchAddress("L2_M", &L2_M);
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data_chain->SetBranchAddress("Hp_M", &Hp_M);
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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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unsigned int entries = data_chain->GetEntries();
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TH1D *h1_B_M = new TH1D("h1_B_M", "m(#pi_{K} #mu^{+} #mu^{-})", nBins, MASS_HIST_MIN, MASS_HIST_MAX);
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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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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 K_4v(K_momentum, K_energy);
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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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Double_t reconstructed_B_Mass = (K_4v + l1_4v + l2_4v).M();
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h1_B_M->Fill(reconstructed_B_Mass);
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}
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TCanvas* c1 = new TCanvas("c1", "c1", 0, 0, 900, 850);
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h1_B_M->Draw();
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c1->Draw();
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c1->SaveAs("BuToKpMuMu_incl_ap_B_M_uncut_subid.jpg");
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return 0;
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}
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