METReconstruction: calculate dR directly

The MET reconstruction need to retrieve the clusters around 0.2 cone of the tau candidate. Since the vertex of the tau candidate could be different from PV0, a vertex correction is needed. The corrected clusters are decorated onto the tau candidate, but is transient only. This break the MET reconstruction from ESD/AOD. After recent development of tau reconstruction, the correction is now much simple, and we could do it directly in METReconstruction.

This should fix ATLASRECTS-5793.

added JetEtmiss Reconstruction master labels

This merge request affects 1 package:

• Reconstruction/MET/METReconstruction

This merge request affects 2 files:

• Reconstruction/MET/METReconstruction/CMakeLists.txt
• Reconstruction/MET/METReconstruction/Root/METTauAssociator.cxx

Adding @goetz as watcher

added Tau review-pending-level-1 labels

CI Result SUCCESS (hash 463c0fe2)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 24686]

adding the urgent label since the MET test is broken at the moment.

added urgent label

All seems fine, approving. Cheers, L1

added review-approved label and removed review-pending-level-1 label

Pinging @wbalunas @cdelitzs @khoo to double check the logic here-- it looks good to me, I think?

Hi, just trying to understand the purpose of the correction here. In MET reco, all we want is the list of the jet constituent clusters, so that we can calculate the 4-vector sum that should be subtracted from the jet if we decide that the tau takes priority (i.e. is selected for the tau term).

Is the four-vector correction applied so that you calculate deltaR to the tau seed axis correctly? If so, do you need to calculate the deltaR because the clusterList returned from the tau is more inclusive than the clusters actually used for the tau energy reconstruction?

resolved all threads

Thanks @khoo !

merged

mentioned in commit e5557a15

added sweep:ignore label