listing the content of the root file I’ve just produced , I don’t understand why the TTree object T is on file twice with two different cycle numbers (what is a cycle number?) while I have written it only once (tree->Write()).
root  f = new TFile(“BuildBeautyPb_1.0.root”)
root  .ls
KEY: TTree T;12 Heavy flavor tree
KEY: TTree T;11 Heavy flavor tree
Any pedagogical explanation?
PS: ROOT Version 4.02/00 + SL3