How to automatically redefine rooformulavar on variable name change?

[Rishabh_Mehta]

I have a rooformulavar present in a workspace (defined by the roofit factory string expression). When I import the contents of a higher level pdf to another workspace, while renaming the variables, the string expression of the formulavar does not change, causing a compilation issue.

What is the correct way to handle this? The workspace is attached here: dt_belle_mr1.root - Google Drive

The code

import ROOT as R

reso_path = f'dt_belle_mr1.root'
reso_ws = R.TFile(reso_path).Get('dt_workspace')

cont_ws = R.RooWorkspace('contdt_workspace', 'contdt_workspace')
cont_ws.Import(reso_ws.pdf("res_core"), R.RooFit.RenameAllVariablesExcept("cont", "deltat, deltaterr"), R.RooFit.RenameAllNodes("cont"))

cont_ws.Print("t")

The expression of formulavar frac_tail_cont still points to old naming of the variables. When I finally import this into another workspace, the expression basically fails to compile. What can be done about this?

[Danilo]

Hi,

Thanks for posting. We are very interested in supporting Belle precision studies!
I add the RooFit expert in the loop, @jonas , but mind, the answer might come with some latency.

Best,
D