July 2026 monthly summary for AliceO2Group/O2Physics: What was delivered: - Key feature: ALICE3 Dilepton Momentum Smearing Workflow. Introduces a dedicated workflow to simulate detector resolution effects for ALICE3, with new data structures and a new analysis task to apply momentum smearing. Existing tasks were updated to support smeared track analysis, enabling ACTS-based resolution models for more realistic physics studies. Impact: - Improves realism of dilepton analyses by incorporating detector resolution through smeared momentum, leading to more accurate physics interpretations and comparisons with ACTS-based models. - Positions O2Physics to support LUT-based resolution studies and more robust uncertainty quantification in ALICE3 dilepton analyses. What was accomplished: - Data structures and a new analysis task for applying momentum smearing were added. - Existing tasks were extended to operate on smeared tracks, ensuring end-to-end consistency. - Commit reference: [ALICE3] alice3 dilepton: machinery for study with LUTS based on ACTS (#17038) (bd2a8b7831071e5760bb96245347ba3cbf35db10) Technologies/skills demonstrated: - ACTS-based resolution modeling integration - Momentum smearing algorithms and data-structure design - Task-oriented software design and extensible analysis pipelines - C++/ROOT and large-scale software engineering practices

June 2026 monthly summary for AliceO2Group/O2Physics focusing on feature delivery and impact for ALICE 3 dilepton analyses.

April 2026 Monthly Summary for AliceO2Group/O2DPG focusing on GeneratorEMCocktail centrality coverage and data parametrization updates. The work delivered targeted enhancements to test coverage in Pb-Pb collisions for centrality bins 10-20 and 20-30, and updated the corresponding parametrization data to include these bins. A gap identified in centrality bin coverage (issue #2333) was addressed with a committed change. Impact: Strengthened validation of GeneratorEMCocktail in heavy-ion simulations, improving reliability of physics analyses and reducing risk of undetected issues in Pb-Pb cocktail scenarios. The work aligns with QA, release readiness, and reproducible results across centrality selections. Technologies/skills demonstrated: test automation, data parametrization management, Git-based version control, heavy-ion simulation validation, and maintenance of simulation datasets.

March 2026 monthly summary for AliceO2Group/O2DPG: Delivered a heavy-flavor (HF) enhanced PbPb Monte Carlo generator for dielectron analysis, including embedding of HF pp events into Pb-Pb simulations to improve fidelity. Fixed generator tests to ensure proper functionality, reducing risk of regression in future runs. This work strengthens the realism of heavy-flavor dielectron studies and supports more precise physics interpretation in heavy-ion analyses.

February 2026 performance highlights across ALICE O2 production and analysis suites. Implemented key simulation and analysis improvements that directly enhance physics fidelity and data quality for PbPb collisions and dilepton studies, with a clear impact on analysis readiness and reduced debugging effort.

For 2025-12, delivered a feature enhancement in AliceO2Group/O2Physics: Event Selection Enhancement in SkimmerOTS. By integrating collision selection logic into the skimmerOTS structure, the event processing path became more accurate and trigger handling more reliable, contributing to robust data processing and downstream trigger pipelines. No major bugs were reported this month; work focused on feature integration, code quality, and maintainability.

Monthly summary for 2025-11: Delivered a high-impact feature in O2Physics to improve data quality and analysis efficiency, with clean, well-documented commits and clear business value.

In July 2025, delivered a focused feature in AliceO2Group/O2Physics that enhances track filtering by phi angle. The new options support mirroring the phi range and rejecting specific phi intervals, enabling more granular and flexible event filtering for PWGEM analyses. This directly improves the precision of physics selections, reduces noise, and enhances reproducibility of results. The change is implemented via commit 2d0c61bea28628e60b75ca25c900969d28bcd434 ([PWGEM] Add the possibility to select Phi regions, #11978).

May 2025 achievements centered on improving heavy flavor (HF) simulation fidelity and stability across O2Physics and O2DPG. Key features delivered: in O2DPG, new 13 TeV HF cocktail configurations for beauty and charm in Pythia8, including forced decays, color reconnection and string fragmentation parameters, plus expanded energy setups (pp502, pp536) to broaden HF coverage. Major bug fixes: in O2Physics, refactored HF cocktail filtering to PDG-code ranges to ensure only open charm/beauty semileptonic decays and exclusion of quarkonia; in O2DPG, reverted forced open-beauty decays back to a general semileptonic charm decay to restore default behavior. Overall impact: improved physics purity and realism, enhanced configurability and reproducibility of HF event simulations, and reduced risk of unintended decays. Technologies/skills demonstrated: PDG-code based filtering, refactoring from string logic to numeric range checks, Pythia8 HF cocktail configuration, energy-scoped HF channels, and disciplined version-control changes.

April 2025: Targeted improvements to O2Physics Beauty/Charm analysis normalization, focusing on data quality and robust physics conclusions for heavy-flavor measurements.

March 2025 monthly summary for AliceO2Group/O2Physics: Delivered a feature to simplify quark data collection within the PWGEM task by removing histogram weights. No major bugs fixed this month. Overall impact includes streamlined data collection, improved maintainability, and clearer data-processing provenance. Technologies demonstrated include C++/ROOT histogram handling, PWGEM workflow, and Git-based change tracking (commit 6585df1db7d9805798b588d68255c905b5b5ff07).