ePIC Jet/HF Meeting
Discussion Notes
Derek Anderson
02.02.2023

(Apologies for any ommissions or mistakes!)

- Consider philosophy of what we want to do
  - Is EICRecon the right place to do
    everything?
  - Including every combination of every
    jet definition/parameter would be too
    much
  ==> Have a representative, generic jet
      output to do benchmarks on
  ==> Then have standalone infrastructure
      others can use to look at more
      specific options

- 1st Priority: get it working!
  ==> Set it up st. default parameters
      spit out generic jets for
      benchmarking
  - But build in some degree of flexibility
    for future development/studies
  - We can't anticipate everything
    everyone will want to do
    ==> Will be good to include examples
        of how to do standalone jet
        reconstruction for others to
        build on

- Will we be able to do jet energy resolution?
  - Key benchmark!! The bare minimum
  ==> Have 2 generic jet outputs:
    (a) Truth jets
    (b) Reconstructed jets
  - This will enable us to match jets and 
    produce JER plots

- How will backgrounds play into this? Simulations
  will include background at the track level...
  - Since that's upstream of the jet reconstruction,
    reconstructed jets will include it
  - Set up things such that we can do systematic
    studies of background impact & subtraction
    schemes
    ==> e.g. background will vary with jet reco.
        input, so will need ability to systematically
        vary input and look at impact on JER &
        other benchmarks
    ==> Consider a cyclical workflow:
      (i)   Reconstruct jets w/ background & look
            at impact
      (ii)  Push information upstream for
            mitigation
      (iii) Repeat (i) - (ii) as necessary

- How many people in Task Force?
  - Just 2 right now
  ==> Fill out poll!
        https://www.when2meet.com/?18588885-DkOuM

- Is there a mattermost channel?
  - At meeting: no
  - But now there is!
      https://eic.cloud.mattermost.com/main/channels/jet-reconstruction

- EpicAnalysis
  - 1st order of business: getting jet info from kinematic
    class into dedicated jet class:
      https://github.com/eic/epic-analysis/issues/234
  - How do we get EICRecon output into EpicAnalysis?
    ==> Good discussion for task force: EICRecon output
        should match what's needed by EpicAnalysis