Optionally use current perigee when recomputing perigee for TRT standalone tracks.

Adding the possibility to start the extrapolation to the beamline etc. at the original perigee for TRT standalone tracks.

The perigee of TRT standalone tracks has a corrected covariance. The other track states have en optimistic covariance matrix. The extrapolation may favour other track states as a starting point for the extrapolation to the beam-line etc. . As a consequence the resulting extrapolated track parameters may be very different.

By enforcing that the original perigee is used for the extrapolation, the resulting covariance matrices are consistent and will be based on the more realistic covariance matrix of the original perigee.

You can find additional information on ATLASRECTS-8132

changed the description

This merge request affects 1 package:

• Reconstruction/RecoTools/TrackToVertex

This merge request affects 2 files:

• Reconstruction/RecoTools/TrackToVertex/src/TrackToVertex.cxx
• Reconstruction/RecoTools/TrackToVertex/src/TrackToVertex.h

Adding @goetz as watcher

added Reconstruction main review-pending-level-1 labels

mentioned in merge request !75377 (closed)

changed target branch from main to 24.0

added 24.0 label

CI Result SUCCESS (hash 0e7b6734)

	Athena
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output (remote access info)

Changes look fine to me, approving from L1 side (Fábio).

removed review-pending-level-1 label

added review-approved label

added review-approved-tier0 label

mentioned in commit f6667f09

merged

mentioned in merge request !75674 (merged)

mentioned in merge request !75723 (merged)