[apalasciano]

@scattaru @zz951
DCA ambiguity in the selection of associated particles.
If, in the correlator, a looser selection is applied than in the task, larger negative DCA tracks are taken into account.
If, instead, the same DCA cut is used, the filter in the correlator provides the correct selection.

This removes ambiguities.

[github-actions]

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

[alibuild]

Error while checking build/O2Physics/o2 for 5c31fbd at 2026-11-06 12:00:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/HFC/Tasks/taskCorrelationLcHadrons.cxx:493:17: error: unused variable 'trackTpcCrossedRows' [-Werror=unused-variable]
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/staging for 5c31fbd at 2026-11-06 12:17:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/PWGHF/HFC/Tasks/taskCorrelationLcHadrons.cxx:493:17: error: unused variable 'trackTpcCrossedRows' [-Werror=unused-variable]
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for 5c31fbd at 2026-11-06 14:56:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'To reproduce the results below locally, run: '\''aliBuild build O2Physics-code-check -e ALIBUILD_BASE_HASH=upstream/master'\''.'
To reproduce the results below locally, run: 'aliBuild build O2Physics-code-check -e ALIBUILD_BASE_HASH=upstream/master'.
++ echo 'To apply all automatic fixes, add the '\''-e O2PHYSICS_CHECKER_FIX=1'\'' option.'
To apply all automatic fixes, add the '-e O2PHYSICS_CHECKER_FIX=1' option.
++ echo 'See the documentation for more details at: <https://aliceo2group.github.io/analysis-framework/docs/tools/#running-with-o2physics-code-check>.'
See the documentation for more details at: <https://aliceo2group.github.io/analysis-framework/docs/tools/#running-with-o2physics-code-check>.
++ echo 'Found 2 errors and 30 warnings.'
Found 2 errors and 30 warnings.
++ [[ 2 -gt 0 ]]
++ cat /sw/BUILD/c689bd538324ba1b7b536b4a9ca22938d2af8a3c/O2Physics-code-check/errors.txt
PWGHF/HFC/Tasks/taskCorrelationLcHadrons.cxx:493:17: error: Value stored to 'trackTpcCrossedRows' during its initialization is never read [clang-analyzer-deadcode.DeadStores,-warnings-as-errors]
PWGHF/HFC/Tasks/taskCorrelationLcHadrons.cxx:493:17: error: unused variable 'trackTpcCrossedRows' [clang-diagnostic-unused-variable,-warnings-as-errors]
++ [[ 30 -gt 0 ]]
++ cat /sw/BUILD/c689bd538324ba1b7b536b4a9ca22938d2af8a3c/O2Physics-code-check/warnings.txt
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:82:7: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:83:56: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:83:76: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:84:7: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:85:7: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:86:7: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:87:7: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:88:7: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:89:7: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:90:55: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:90:81: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:91:55: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:91:81: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:92:55: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:92:81: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:93:55: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:93:81: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:94:56: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:94:83: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:95:56: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDplusHadrons.cxx:95:83: warning: 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]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:84:36: warning: variable 'channelsResonant' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:411:101: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:414:111: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:433:149: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:436:116: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:436:263: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:438:128: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:441:116: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx:441:242: warning: unchecked access to optional value [bugprone-unchecked-optional-access]
++ [[ 2 -gt 0 ]]
++ exit 1
[0 more errors; see full log]

Full log here.

[alibuild]

Auto-approving on behalf of @apalasciano.