Adding a new branch such that invariant mass that not exist in DelphesTree

TMVA
1

Hello Dr @moneta ,
I use TMVA to fit input data as tree.root.the tree is Delphes .But according to the defined
Branches and varaibles within headerfile (tree=Delphes) ,not all branches are exist .Another meaning if i want to add a new branch such that the invariant mass that not exist in header file .Is i create a new tree to clone the old tree and modify it to add a new brach ? .This is my suggested idea or is there another way?.Could you clarify this issue with an attached example?

Thanks
Ahmed

treeAnalysis.C (9.6 KB)
treeAnalysis.h (83.0 KB)
SetupTMVA.C (5.6 KB)

2

Hi Ahmed,

Waiting for @moneta to reply, I must confess it is not clear to me what exactly you want to achieve.
Are you aiming to add a transient column to your dataset? Have you tried the ROOT: ROOT::RDataFrame Class Reference class and its Define method?

Best,
D

3

Hello Dr @Danilo ,

No,I mean adding a new branch from a new tree except the old Tree (Delphes) that not
Contain all branches and variables.How much
Time to reply on my question?

Thanks
Ahmed

4

Hello root_TMVA experts,

Is there a solution for my issue?

Thanks
Ahmed