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jengbou |
1.1 |
void drawTree()
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{
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gROOT->SetStyle("CMS");
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TFile *f = new TFile("Run124023/LumiScan_Run124023LS039-096.root");
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double x0 = 0.106379;
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double y0 = 0.029332;
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TTree *t1 = (TTree*)f->Get("mytree");
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Double_t pt,d0,z0,phi0,eta,normchi2;
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UInt_t nTotLayerMeas,nPixelLayerMeas;
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t1->SetBranchAddress("pt",&pt);
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t1->SetBranchAddress("d0",&d0);
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t1->SetBranchAddress("z0",&z0);
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t1->SetBranchAddress("phi0",&phi0);
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t1->SetBranchAddress("eta",&eta);
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t1->SetBranchAddress("nTotLayerMeas",&nTotLayerMeas);
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t1->SetBranchAddress("nPixelLayerMeas",&nPixelLayerMeas);
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t1->SetBranchAddress("normchi2",&normchi2);
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//create one histogram
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TH2D *hd0_phi = new TH2D("hd0_phi","d_{0} vs. #phi",32,-3.14,3.14,25,-0.3,0.5);
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Int_t nentries = (Int_t)t1->GetEntries();
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for (Int_t i=0;i<nentries;i++) {
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t1->GetEntry(i);
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if (pt > 2.0
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&& nTotLayerMeas >= 6
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// && nPixelLayerMeas >= 0
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&& normchi2 < 10.0
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&& fabs(d0) < 1.0
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&& fabs(eta) < 2.4
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&& fabs(z0) < 60
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)
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hd0_phi->Fill(phi0,d0);
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}
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TF1 *f0 = new TF1("f0","[0]*sin(x-[1])",-3.14,3.14);
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double amp = sqrt(x0*x0+y0*y0);
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double ang = atan2(y0,x0);
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f0->SetParameters(amp,ang);
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TCanvas *c1 = new TCanvas("c1","c1",756,600);
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// hd0_phi->SetMarkerStyle(1);
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// hd0_phi->SetMarkerSize(0.5);
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hd0_phi->SetLineWidth(0.1);
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hd0_phi->GetXaxis()->SetTitle("#phi [rad]");
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hd0_phi->GetYaxis()->SetTitle("Impact Parameter [cm]");
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hd0_phi->Draw("BOX");
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f0->SetLineColor(4);
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f0->Draw("sames");
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// TPaveText *ppt= new TPaveText(.35,.78,.7,.88,"NDC");
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TPaveText *ppt= new TPaveText(.36,.68,.76,.82,"NDC");
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ppt->AddText("CMS Preliminary 2009");
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ppt->AddText("Run 124023 : #sqrt{s} = 900 GeV");
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ppt->SetTextAlign(12);
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ppt->SetTextFont(62);
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ppt->SetTextSize(0.045);
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ppt->SetBorderSize(0);
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ppt->SetFillColor(0);
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// ppt->SetFillStyle(0);
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ppt->Draw();
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TLegend *l0 = new TLegend(0.38,0.54,0.58,0.66);
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// TLegend *l0 = new TLegend(0.35,0.55,0.84,0.8);
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l0->SetTextFont(62);
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l0->SetFillColor(0);
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// l0->SetFillStyle(0);
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l0->AddEntry(hd0_phi," Data","f");
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l0->AddEntry(f0," Fit","l");
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l0->Draw();
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// t1->SetMarkerColor(kRed);
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// t1->Draw("d0:phi0","pt>1 && nTotLayerMeas>=6" && normchi2 < 10 && d0 < 1.0 && d0 > -1.0 && eta < 2.4 && eta > -2.4 && z0 < 60 && z0 > -60);
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if (gROOT->IsBatch()) return;
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c1->Print("d0_phi.pdf");
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}
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