October 2025 monthly summary: Delivered a feature-rich integration that enhances event characterization by incorporating collision centrality directly into OmegaC tree creation in O2Physics. Replaced legacy centrality evaluation with a direct call to o2::hf_centrality::getCentralityColl, and expanded data structures with centrality-related fields (e.g., cent::CentFT0M) across the tree creation pathway (treeCreatorOmegac0ToOmegaPi). The work is backed by commit 46972859a9089acc30d6915a36ad5ecf87da2769 and tracks issue #13423. No major bugs fixed this month; the focus was on delivering high-value functionality and enabling more precise physics analyses. The change improves downstream data products, analysis fidelity, and cross-module collaboration with centrality utilities.

Month: 2025-09. Delivered a targeted adjustment to HF event selection defaults in the AliceO2Group/O2Physics repository, tightening the starting thresholds to improve initial event-selection behavior and align with downstream analysis expectations. The change updates two header defaults: CentralityEstimation.h to -1.0f and utilsEvSelHf.h to -10.0f. Commit reference: [PWGHF] Change default value of minimum centrality cut in HF event selection (#12789) (5855accd45143c3eb9a9eaf32c956314e0b93e4c).

August 2025 – AliceO2Group/O2Physics: delivered feature-driven improvements focused on PID granularity and multi-particle analysis workflows. The work enhances analysis precision, data richness, and reproducibility, enabling clearer physics signals with scalable pipelines.

July 2025 monthly summary: Delivered robust OmegaC data/MC processing enforcement across O2Physics, introduced MC collision data enhancements, corrected event selection histogram naming, fixed Bs decays data processing via sliceBy usage, and extended ZDC data format with a new getter for SecFlag. These efforts increased processing robustness, data quality, and maintainability, enabling clearer configuration, more accurate MC reporting, and easier external analysis.

April 2025 monthly summary for AliceO2Group/O2Physics: Focused on OmegaC0 analysis workflow robustness; addressed data processing and selection logic issues; refactored data structures and selection filters to improve accuracy and maintainability; enabled robust handling of OmegaC0 candidates for real data and Monte Carlo simulations.

February 2025 (Month 2025-02) — AliceO2Group/O2Physics: Delivered a targeted refactor of the D0 Tree Creator and candidate handling to improve maintainability and readiness for performance optimizations. The changes clean up table filling, remove unnecessary includes, and tighten handling of cosThetaStar and ML probabilities for D0 and D0bar candidates, laying groundwork for faster candidate data filling and more reliable analysis pipelines.

January 2025 (AliceO2Group/O2Physics) — Strengthened code governance for PWGHF by updating code ownership, enabling clearer responsibility and faster, higher-quality code reviews. This infrastructure-driven change improves maintainability for PWGHF-related changes and aligns with code review standards.

December 2024: Implemented Monte Carlo (MC) generator configuration for D2H XiC0, XiC+, and OmegaC within PWGHF, enabling generator-level MC simulations without gap triggers. Added new .ini configuration files and tests to validate generation and decay properties, ensuring reliable, repeatable simulations. This work improves simulation fidelity and throughput, reduces manual configuration, and supports PWGHF downstream analyses.