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Bug fix and updated expected behaviour for EGammaVariableCorrection tool

Nils Gillwald requested to merge nigillwa/athena:eyVarCorr_negativePtBugfix into master

In ATLASDPD-1572, unexpected behaviour of the EGammaVariableCorrection tool was found: The tool failed when encountering photons with a pT smaller than 0. The following changes to the behaviour of the tool are made:

  • When retrieving the EGamma object pT, it is checked it it is non-negative. If not, a warning is printed and the object is processed as if it had a pT of 0.
  • The check for negative pT and eta values in ElectronPhotonVariableCorrectionBase::findBin has been updated to use the correction value in the leftmost respective bin instead of failing. This is also a necessary change w.r.t. the recently merged changes to this tool in !40857 (merged).

Notifying @brendlin, @jdevivi, @jmaurer, @jpoveda for awareness.

Edited by Nils Gillwald

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