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"# feynman\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Otto Schaile \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:36 PM."
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"TCanvas *c1 = new TCanvas(\"c1\", \"A canvas\", 10, 10, 600, 300);\n",
"c1->Range(0, 0, 140, 60);\n",
"Int_t linsav = gStyle->GetLineWidth();\n",
"gStyle->SetLineWidth(3);\n",
"TLatex t;\n",
"t.SetTextAlign(22);\n",
"t.SetTextSize(0.1);\n",
"TLine *l;\n",
"l = new TLine(10, 10, 30, 30);\n",
"l->Draw();\n",
"l = new TLine(10, 50, 30, 30);\n",
"l->Draw();\n",
"TCurlyArc *ginit = new TCurlyArc(30, 30, 12.5 * sqrt(2), 135, 225);\n",
"ginit->SetWavy();\n",
"ginit->Draw();\n",
"t.DrawLatex(7, 6, \"e^{-}\");\n",
"t.DrawLatex(7, 55, \"e^{+}\");\n",
"t.DrawLatex(7, 30, \"#gamma\");\n",
"\n",
"TCurlyLine *Gamma = new TCurlyLine(30, 30, 55, 30);\n",
"Gamma->SetWavy();\n",
"Gamma->Draw();\n",
"t.DrawLatex(42.5, 37.7, \"#gamma\");\n",
"\n",
"TArc *a = new TArc(70, 30, 15);\n",
"a->Draw();\n",
"t.DrawLatex(55, 45, \"#bar{q}\");\n",
"t.DrawLatex(85, 15, \"q\");\n",
"TCurlyLine *gluon = new TCurlyLine(70, 45, 70, 15);\n",
"gluon->Draw();\n",
"t.DrawLatex(77.5, 30, \"g\");\n",
"\n",
"TCurlyLine *z0 = new TCurlyLine(85, 30, 110, 30);\n",
"z0->SetWavy();\n",
"z0->Draw();\n",
"t.DrawLatex(100, 37.5, \"Z^{0}\");\n",
"\n",
"l = new TLine(110, 30, 130, 10);\n",
"l->Draw();\n",
"l = new TLine(110, 30, 130, 50);\n",
"l->Draw();\n",
"\n",
"TCurlyArc *gluon1 = new TCurlyArc(110, 30, 12.5 * sqrt(2), 315, 45);\n",
"gluon1->Draw();\n",
"\n",
"t.DrawLatex(135, 6, \"#bar{q}\");\n",
"t.DrawLatex(135, 55, \"q\");\n",
"t.DrawLatex(135, 30, \"g\");\n",
"c1->Update();\n",
"gStyle->SetLineWidth(linsav);"
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