[PWGLF] Phi-Xi correlations

[scannito]

No description provided.

[github-actions]

O2 linter results: ❌ 3 errors, ⚠️ 6 warnings, 🔕 0 disabled

[Copilot]

Pull request overview

This PR extends the PWGLF phi–strangeness correlation workflow to support Phi–Xi correlations by adding a reduced Xi candidate table/producer and integrating Xi as an associated species in the correlation task, alongside a refactor that generalizes “associated particle” handling.

Changes:

• Add reduced Xi candidate AOD tables and a new XiReducedCandProducer to populate them.
• Extend the phiStrangeCorrelation analysis task with Xi configurables, histograms, and SE/ME processing paths.
• Refactor associated-particle processing using templated helpers to share logic across K0S/Xi/Pion.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx	Adds Phi–Xi histograms/configurables and refactors associated-species processing with templates.
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx	Introduces Xi reduced-candidate producer and wires it into the workflow.
PWGLF/DataModel/LFPhiStrangeCorrelationTables.h	Adds Xi reduced-candidate AOD table definitions and mass-window helper column.

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[alibuild]

Error while checking build/O2Physics/code-check for 9827aa9 at 2026-07-17 16:53:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 31 errors and 139 warnings.'
Found 31 errors and 139 warnings.
++ [[ 31 -gt 0 ]]
++ cat /sw/BUILD/7909608d71d7a28dfa6af986437fa82f1da1adff/O2Physics-code-check/errors.txt
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:223:35: error: unchecked access to optional value [bugprone-unchecked-optional-access,-warnings-as-errors]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:237:37: error: unchecked access to optional value [bugprone-unchecked-optional-access,-warnings-as-errors]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:255:37: error: unchecked access to optional value [bugprone-unchecked-optional-access,-warnings-as-errors]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:270:26: error: constness of 'motherMcParticle' prevents automatic move [performance-no-automatic-move,-warnings-as-errors]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:279:22: error: the const qualified variable 'genPhi' is copy-constructed from a const reference; consider making it a const reference [performance-unnecessary-copy-initialization,-warnings-as-errors]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:340:15: error: boolean expression can be simplified by DeMorgan's theorem [readability-simplify-boolean-expr,-warnings-as-errors]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:341:15: error: boolean expression can be simplified by DeMorgan's theorem [readability-simplify-boolean-expr,-warnings-as-errors]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:976:8: error: constructor does not initialize these fields: pdgDB [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:99:20: error: member 'effMap' of type 'const EffMapPtr &' (aka 'const variant<std::shared_ptr<TH2>, std::shared_ptr<TH3>> &') is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:105:3: error: function 'getBinEfficiencyAndError' should be marked [[nodiscard]] [modernize-use-nodiscard,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:129:3: error: function 'interpolateEfficiency' should be marked [[nodiscard]] [modernize-use-nodiscard,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:153:17: error: member 'candidates' of type 'const TCands &' is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:153:17: error: member 'candidates' of type 'const o2::soa::Table<o2::aod::Hash<"K0sReducedCandidatesData"_h>, o2::aod::Hash<"K0SCANDDATA/0"_h>, o2::aod::Hash<"AOD"_h>> &' is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:153:17: error: member 'candidates' of type 'const o2::soa::Table<o2::aod::Hash<"K0sReducedCandidatesMcReco"_h>, o2::aod::Hash<"K0SCANDMCRECO/0"_h>, o2::aod::Hash<"AOD"_h>> &' is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:153:17: error: member 'candidates' of type 'const o2::soa::Table<o2::aod::Hash<"PionTracksData"_h>, o2::aod::Hash<"PITRACKSDATA/0"_h>, o2::aod::Hash<"AOD"_h>> &' is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:153:17: error: member 'candidates' of type 'const o2::soa::Table<o2::aod::Hash<"PionTracksMcReco"_h>, o2::aod::Hash<"PITRACKSMCRECO/0"_h>, o2::aod::Hash<"AOD"_h>> &' is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:153:17: error: member 'candidates' of type 'const o2::soa::Table<o2::aod::Hash<"XiReducedCandidatesData"_h>, o2::aod::Hash<"XICANDDATA/0"_h>, o2::aod::Hash<"AOD"_h>> &' is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:153:17: error: member 'candidates' of type 'const o2::soa::Table<o2::aod::Hash<"XiReducedCandidatesMcReco"_h>, o2::aod::Hash<"XICANDMCRECO/0"_h>, o2::aod::Hash<"AOD"_h>> &' is a reference [cppcoreguidelines-avoid-const-or-ref-data-members,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:162:8: error: constructor does not initialize these fields: ccdb [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:288:22: error: initializer for member 'effMapPhi' is redundant [readability-redundant-member-init,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:308:10: error: constructor does not initialize these fields: multiplicity [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:442:11: error: implicit conversion 'value_type' (aka 'int') -> 'bool' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:571:5: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:575:29: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:1576:27: error: implicit conversion 'value_type' (aka 'int') -> 'bool' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:1577:26: error: implicit conversion 'value_type' (aka 'int') -> 'bool' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:1578:28: error: implicit conversion 'value_type' (aka 'int') -> 'bool' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:1588:5: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:1598:44: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:1609:13: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGLF/Tasks/Strangeness/phiStrangeCorrelation.cxx:1618:46: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
++ [[ 139 -gt 0 ]]
++ cat /sw/BUILD/7909608d71d7a28dfa6af986437fa82f1da1adff/O2Physics-code-check/warnings.txt
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:155:73: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:157:67: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:160:61: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:163:49: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:166:171: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:168:63: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:178:109: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:180:186: warning: statement should be inside braces [readability-braces-around-statements]
PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx:202:26: warning: statement should be inside braces [readability-braces-around-statements]
[0 more errors; see full log]

Full log here.