[yashpatley]

Modified close pair rejection
Added histograms for QA

[github-actions]

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

[alibuild]

Error while checking build/O2Physics/code-check for 7ff186a at 2026-11-04 16:55:

## 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 7 errors and 2 warnings.'
Found 7 errors and 2 warnings.
++ [[ 7 -gt 0 ]]
++ cat /sw/BUILD/c47f6bb9eac776f62866feb484ac093e6697d607/O2Physics-code-check/errors.txt
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:903:24: error: C-style casts are discouraged; use static_cast [google-readability-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:958:61: error: C-style casts are discouraged; use static_cast [google-readability-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:1070:37: error: C-style casts are discouraged; use static_cast [google-readability-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:1452:77: error: C-style casts are discouraged; use static_cast [google-readability-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:1453:81: error: C-style casts are discouraged; use static_cast [google-readability-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:1487:84: error: C-style casts are discouraged; use static_cast [google-readability-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:1488:88: error: C-style casts are discouraged; use static_cast [google-readability-casting,-warnings-as-errors]
++ [[ 2 -gt 0 ]]
++ cat /sw/BUILD/c47f6bb9eac776f62866feb484ac093e6697d607/O2Physics-code-check/warnings.txt
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:746:14: warning: redundant boolean literal in conditional return statement [readability-simplify-boolean-expr]
PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx:1397:31: warning: statement should be inside braces [readability-braces-around-statements]
++ [[ 7 -gt 0 ]]
++ exit 1
--

Full log here.