I am creating a bunch of root files in which I create two trees: lh_train and lh_test. When I open these files, instead of just finding lh_train and lh_test, I find:
Attaching file LHProcessor.PowHegPythia_ggH125_tautaulh.mc11c.root as _file0...
root  .ls
KEY: TTree lh_train;2
KEY: TTree lh_train;1
KEY: TTree lh_test;2
KEY: TTree lh_test;1
And I find different numbers of events in ;1 and ;2. What is going on here? Why is ROOT splitting my trees in half? Do I need to consider all events found in ;1 and ;2, or is only one of these two real? I find that if I do
The number of events I see correspond to the number of events in lh_train;2, the events in lh_train;1 being completely dismissed. If I want access to the events in lh_train;1, I need to call it explicitly:
Should I even bother retrieving events in lh_train;1?
Cheers and thanks,