Problem in calculating areas under fitted peak

[Wile_E_Coyote]

Facing Problem while fitting

The first parameter of “gaus” is the “peak’s height” while the first parameter of “gausn” is the “peak’s area”. In both cases, the second parameter is the “peak’s mean” (i.e. the “peak’s position”). { TGraph *g = new TGraph("eu_gu_1.dat"); // g->Sort(); // just a precaution TF1 *f1 = new TF1("f1", "gausn(0) + pol1(3)", 400., 435.); // linear background f1->SetParameters(14000., 415., 2., 0., 0.); g->Fit("f1", "BR+"); TF1 *f2 = new TF1("f2", "gausn(0) + pol1(3)", 1160., 1200.); f2…