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[PWGLF] Update Xi1820 for mixing and candidate cuts - #18690

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dmallick2 merged 1 commit into
AliceO2Group:masterfrom
mjkim525:xi1820-mixing-qa
Nov 11, 2026
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dmallick2 merged 1 commit into
AliceO2Group:masterfrom
mjkim525:xi1820-mixing-qa

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Summary

This PR improves event-mixing performance, refines V0 selection to distinguish between Lambda and anti-Lambda candidates, and includes minor fixes.

Updates

  • Optimize charged and neutral cross-DF mixing to reduce cpu time.
  • Extend before/after QA for track quality, flags, and V0 selection variables.
  • Add configurable Lambda/anti-Lambda Armenteros alpha cuts.
  • Add six-dimensional pair histograms using Delta phi, Delta eta, and pT asymmetry with configurations.

Cache selected mixing candidates in owned FIFO value pools and avoid repeated selection and Arrow table reconstruction.

Extend before/after QA and align Lambda daughter PID bins with stored values. Include Lambda alpha selections, six-dimensional pair observables, and updated mass binning.
@github-actions github-actions Bot added the pwglf label Nov 11, 2026
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@mjkim525 mjkim525 changed the title [PWGLF] Update Xi1820 cross-DF mixing and candidate QA [PWGLF] Update Xi1820 for mixing and candidate cut Nov 11, 2026
@mjkim525 mjkim525 changed the title [PWGLF] Update Xi1820 for mixing and candidate cut [PWGLF] Update Xi1820 for mixing and candidate cuts Nov 11, 2026
@mjkim525
mjkim525 marked this pull request as ready for review November 11, 2026 12:30
@dmallick2
dmallick2 merged commit 7e854da into AliceO2Group:master Nov 11, 2026
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