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[PWGEM] Rewise phi-star separation cuts#17040

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mhemmer-cern merged 4 commits into
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Steffimro:pcm-hbt-phi-star
Jul 13, 2026
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[PWGEM] Rewise phi-star separation cuts#17040
mhemmer-cern merged 4 commits into
AliceO2Group:masterfrom
Steffimro:pcm-hbt-phi-star

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@Steffimro

@Steffimro Steffimro commented Jul 13, 2026

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Same-sign conversion legs merging in the TPC deplete the SE pair distribution at low q_inv. This PR adds a separation variable u (Delta eta and signed Delta phi* averaged over the nine standard TPC radii, min over both same-sign leg pairs), filled vs q_inv and k_T in SE and ME to derive a data-driven cut; the cut itself is off by default.

@github-actions github-actions Bot added pwgem photon Photon and neutral meson PAG label labels Jul 13, 2026
@github-actions github-actions Bot changed the title Rewise phi-star separation cuts [PWGEM] Rewise phi-star separation cuts Jul 13, 2026
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github-actions Bot commented Jul 13, 2026

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O2 linter results: ❌ 0 errors, ⚠️ 68 warnings, 🔕 3 disabled

Steffimro added a commit to Steffimro/O2Physics that referenced this pull request Jul 13, 2026
Please consider the following formatting changes to AliceO2Group#17040
@Steffimro Steffimro marked this pull request as ready for review July 13, 2026 11:39
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alibuild commented Jul 13, 2026

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Error while checking build/O2Physics/code-check for 3af5d34 at 2026-07-13 16:07:

## sw/BUILD/O2Physics-latest/log
c++: fatal error: Killed signal terminated program cc1plus
ninja: build stopped: subcommand failed.

Full log here.

@mhemmer-cern mhemmer-cern left a comment

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LGTM
A commit that fixes the code-checker warnings and errors as a follow up please.

@mhemmer-cern mhemmer-cern enabled auto-merge (squash) July 13, 2026 13:21
@mhemmer-cern mhemmer-cern merged commit 13acab6 into AliceO2Group:master Jul 13, 2026
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3 participants