const Float_t drift = 90;
// open file and get graph objects
- TFile* file = new TFile("graph.root", "read");
+ TFile* file = new TFile("DsigmaDb.root", "read");
TGraph* gs1 = gAlice = (TGraph*)(file->Get("Graph;1"));
TGraph* gs2 = gAlice = (TGraph*)(file->Get("Graph;2"));
// initialize arrays