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[PWGCF] TwoParticleCorrelationsMultSpher - #18137

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matarzil wants to merge 3 commits into
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matarzil:my/eventshape-analysis
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matarzil wants to merge 3 commits into
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matarzil:my/eventshape-analysis

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@matarzil matarzil commented Oct 1, 2026

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This is the first commit of this task. It adds the two-particle angular correlation (Δφ, Δη) analysis in pp collisions at 13 TeV, structured in parallel with the AliRoot AliMESppColTask analysis, to PWGCF/TwoParticleCorrelations.

Adds an analysis task (o2-analysis-cf-two-particle-correlations-mult-spher) that fills same-event and mixed-event Δφ-Δη correlation histograms (THnSparse for the full multi-dimensional binning, plus direct TH2D SE/ME pairs for both per-trigger and per-pair normalisation), differential in multiplicity class and transverse sphericity class, at both MC generator level and reconstructed level. Some selection variants are kept togglable via Configurables for methodology cross-checks.

correlation (Δφ, Δη) analysis in pp collisions at 13 TeV, structured in
parallel with the AliRoot AliMESppColTask analysis, to
PWGCF/TwoParticleCorrelations.

Adds an analysis task (o2-analysis-cf-two-particle-correlations-mult-spher)
that fills same-event and mixed-event Δφ-Δη correlation histograms
(THnSparse for the full multi-dimensional binning, plus direct TH2D
SE/ME pairs for both per-trigger and per-pair normalisation), differential
in multiplicity class and transverse sphericity class, at both MC generator level and
reconstructed level. Some selection variants are kept togglable via
Configurables for methodology cross-checks.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YbYBgosEJaDJTkCuqAtNHk
@github-actions github-actions Bot added the pwgcf label Oct 1, 2026
@github-actions github-actions Bot changed the title TwoParticleCorrelationsMultSpher [PWGCF] TwoParticleCorrelationsMultSpher Oct 1, 2026
@github-actions

github-actions Bot commented Oct 1, 2026 •

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O2 linter results: ❌ 0 errors, ⚠️ 110 warnings, 🔕 0 disabled

matarzil and others added 2 commits October 1, 2026 15:54
Applies clang-format (project style) and converts C-style casts to
static_cast, as flagged by the cpplint check in CI. No behavior change:
rebuilt and re-ran the single-file smoke test, same histogram counts as
before. Also adds the <memory> include cpplint pointed out for
shared_ptr<>.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YbYBgosEJaDJTkCuqAtNHk
Framework/*.h headers must use angle brackets (<...>), not quotes,
per the O2Physics include-style convention (Scripts/format_includes.awk)
enforced by the PR formatting / clang-format CI check. Re-ran
clang-format after the change; rebuilt and re-ran the single-file
smoke test, same result as before.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YbYBgosEJaDJTkCuqAtNHk
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