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Add track cluster matching and electron line

Maxime Schubiger requested to merge maxime_electron_line into calo_reco_rebase

This MR adds the track cluster matching algorithm and a first version of an electron line. Here are a few points to consider :

  • I've put the track cluster matching algorithm in a new directory : device/calo/tools/. I plan to add other "tools" there, such as the brem recovery algorithm. If you have a better name, let me know.
  • The track cluster algorithm uses a similar approach as the new "selective matching" in HLT2. It only uses calo digits and not the clusters.
  • I loop several times over all calo digits, it would be more efficient if there was a direct way of getting a calo digit ID for a given (x,y) coordinates.
  • I added the track cluster matching algorithm to the calo sequence
  • The electron line has been optimised with an E/p cut for the electron ID and on the pT and IP chi2 for additional discrimination.
Edited by Maxime Schubiger

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