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Implementing low-pt tracking in high-mu

@spagan @arastogi @lgagnon

Implementing low-pt tracking (above 100 MeV) as a second pass, in high pile-up environment. The implementation is based on the release 21.0 implementation (!33769 (merged)). It implements a z-window based RoI strategy that needs a new SiSPSeedFinder algorithm and a new tool interface with implementations stored in a separate package. This pass is not meant to be run by default, but on dedicated datasets as special reconstruction.

A few notes:

  • All tools and algorithms are thread-safe
  • Property declaration migrated to the latest style
  • The output tracks are saved in a separate container.
  • We updated also the code that stores seeds and track candidates to extend it beyond the main pass

The reconstruction efficiency as a function of the charged particle transverse momentum is: LowPtRoI_Efficiency_vs_Pt_rel23

Edited by Simone Pagan Griso

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