Cut-based inclusive dilepton trigger

Cut-based inclusive dilepton HLT2 line for Run 3, as presented to WP3 in the following talks:

• 14th November 2022: https://indico.cern.ch/event/1180641/#7-dilepton-selections
• 20th December 2022: https://indico.cern.ch/event/1195031/#7-inclusive-dilepton-trigger
• 20th February 2023: https://indico.cern.ch/event/1234745/#7-update-on-cut-based-inclusiv

Intended to provide redundancy to MVA-based inclusive lines (e.g inclusive dilepton, topological b trigger). This merge request will remain a draft until the following tasks have been completed:

• Write lines of trigger:
  • Dielectron lines
  • Electron-muon lines
  • Dimuon lines
  • Same-sign lines
  • Fake lepton lines
    • Single fake lepton lines
• Rate studies across all lines:
  • Dielectron
  • Electron-muon
  • Dimuon
• Tweaking of lines (from studies above)
• Agree prescales: (to be merged as currently present, prescales to be further tuned)
• Fully document lines:
  • Code comments:
• Finalised efficiency and rate calculations

All tasks above are now complete Requesting review of this merge request, with the intention of this being merged in the very near future. Up-to-date results can be found in the following document: cut-based inclusive dilepton trigger results

The rates and efficiencies are also summarised briefly here.

Rates

Category	Output rate / kHz
Real lines	1.603 ± 0.063
Fake lines (prescaled)	1.757 ± 0.066
Total	3.255 ± 0.090

The inclusive rates of each line are summarised in the plot below.

Efficiencies

Channel	Dielectron eff.	Electron-muon eff.	Dimuon eff.
$B_s^0\rightarrow \ell^+\ell^-$	25.6 ± 0.3 %		25.1 ± 0.3 %
$B^+\rightarrow J/\psi\left(\rightarrow \ell^+\ell^-\right) K^+$	20.7 ± 0.3 %		20.5 ± 0.3 %
$B^0\rightarrow K^{\ast0}\left(\rightarrow K^+\pi^-\right)\ell^+\ell^-$	16.0 ± 4 %	15.5 ± 0.6 %	15.7 ± 0.4 %
$\Lambda_b^0 \rightarrow \Lambda^0\left(\rightarrow p^+\pi^-\right)J/\psi\left(\rightarrow\ell^+\ell^-\right)$			3.2 ± 0.5 %

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Hi @jagoodin, many thanks for all the work on the dilepton lines cut-based, feel free to ping whenever you think the MR is ready for a review RTA liasons

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assigned to @jagoodin

Hello @jagoodin, @bimitres, good to see some progress. I would have a minor bookkeeping question if it is really necessary to create a new folder instead of putting this selection into inclusive_detached_dilepton folder. What is NN-based and what cut-based then can be easily distinguished via the filename.

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