added MLL_OSSF selection algo

Added MLL_OSSF algorithm that calculates the invariant mass of two OS electrons/muons and selects the events with the mass in user-defined range in event selection. Use keyword MLL_OSSF to call the algorithm in event selection,MLL_OSSF 80000 100000 selects events with at least 1 Z-like pair, whereas MLL_OSSF 80000 100000 veto vetoes them.

this is originally needed by 4tops analysis, to avoid checking out this package locally and hopefully could benefit other analysis as well, I'm moving it to athena in this MR.

Tagging @ravinab for approval.

This merge request affects 1 package:

• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms

This merge request affects 6 files:

• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/EventSelectionAlgorithms/EventSelectionAlgorithmsDict.h
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/EventSelectionAlgorithms/ZVetoSelectorAlg.h
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/EventSelectionAlgorithms/selection.xml
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/Root/ZVetoSelectorAlg.cxx
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/python/EventSelectionConfig.py
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/src/components/EventSelectionAlgorithms_entries.cxx

Adding @krumnack ,@tadej as watchers

added Analysis CPAlgorithms analysis-review-required main review-pending-level-1 labels

CI Result SUCCESS (hash fd50fb50)

	Athena	AnalysisBase	AthAnalysis
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 3040]

Hi @bdong, this looks quite nice, thanks! Just made one code suggestion.

About the name: this is really a selector for an OSSF pair of leptons within a mass window, right? Maybe "ZVetoSelector" is a bit misleading then... How about calling the algorithm "DileptonOSSFInvariantMassWindowSelectorAlg" (in keeping with DileptonInvariantMassWindowSelectorAlg, since they behave very similarly) and calling the keyword something like "MLL_OSSF"? Then it would be clear (I hope) that MLL_OSSF 80000 100000 selects events with at least 1 Z-like pair, whereas MLL_OSSF 100000 80000 vetoes them.

Actually, for that last part (reverting the mass window), you'd need something like this.

A couple of open threads still need resolving.

Cheers, Lucy (L1)

added review-user-action-required label and removed review-pending-level-1 label

added 1 commit

• 298e6192 - renamed the alg

Compare with previous version

This merge request affects 1 package:

• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms

This merge request affects 6 files:

• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/EventSelectionAlgorithms/DileptonOSSFInvariantMassWindowSelectorAlg.h
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/EventSelectionAlgorithms/EventSelectionAlgorithmsDict.h
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/EventSelectionAlgorithms/selection.xml
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/Root/DileptonOSSFInvariantMassWindowSelectorAlg.cxx
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/python/EventSelectionConfig.py
• PhysicsAnalysis/Algorithms/EventSelectionAlgorithms/src/components/EventSelectionAlgorithms_entries.cxx

Adding @krumnack ,@tadej as watchers

added review-pending-level-1 label and removed review-user-action-required label

changed title from added ZVeto selection algo to added MLL_OSSF selection algo

changed the description

added review-user-action-required label and removed review-pending-level-1 label

resolved all threads

CI Result SUCCESS (hash 298e6192)

	Athena	AnalysisBase	AthAnalysis
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
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 3076]

removed review-user-action-required label

added review-pending-level-1 label