AliceO2Group/O2Physics
Jul 2025 – Jun 2026
6 Months active
Languages Used
C++
Technical Skills
C++C++ DevelopmentData AnalysisHeavy-Ion CollisionsHigh Energy PhysicsParticle Physics
Mingze Li
PROFILE
Mingze Li
Over six months, contributed to the AliceO2Group/O2Physics repository by developing and refining analysis tools for heavy-ion collision and particle physics studies. Built new features such as a D*+ meson spin alignment analysis task and enhanced charm polarization workflows, focusing on data normalization, histogram management, and modular code design. Addressed data quality and reliability by fixing mass assignment errors, improving centrality filtering, and correcting histogram configurations. Leveraged C++, CMake, and scientific computing techniques to integrate new modules and streamline analytics pipelines. The work emphasized maintainability, reproducibility, and robust data processing for high energy physics analysis and simulation tasks.
Overall Statistics
Feature vs Bugs
57%Features
Repository Contributions
8Total
Bugs
3
Commits
8
Features
4
Lines of code
1,782
Activity Months6
Your Network
146 peopleSame Organization
@mails.ccnu.edu.cn1
Work History
June 2026
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly summary for AliceO2Group/O2Physics: Delivered a new D*+ Meson Spin Alignment Analysis Task within O2Physics, introducing a treeCreator to extract and store candidate information into flat tables for local mix-candidate analysis. Added a new C++ source file and updated the CMake build configuration to integrate seamlessly into the existing analysis workflow. The work was committed as f8b07dadba139070c30619425fcc08c078089a9e, co-authored by ALICE Action Bot, reflecting cross-team collaboration. Overall, this enables scalable, reproducible data preparation for spin-alignment measurements and improves analysis throughput.
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly summary for AliceO2Group/O2Physics: Delivered a new D*+ Meson Spin Alignment Analysis Task within O2Physics, introducing a treeCreator to extract and store candidate information into flat tables for local mix-candidate analysis. Added a new C++ source file and updated the CMake build configuration to integrate seamlessly into the existing analysis workflow. The work was committed as f8b07dadba139070c30619425fcc08c078089a9e, co-authored by ALICE Action Bot, reflecting cross-team collaboration. Overall, this enables scalable, reproducible data preparation for spin-alignment measurements and improves analysis throughput.
June 2026
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for AliceO2Group/O2Physics focusing on delivering targeted capability improvements for charm polarization analysis. The primary deliverable was a THnSparse histogram filling enhancement for the Charm Polarization task, enabling conditional filling when rotation background is not applied. This strengthens data analysis reliability and supports more precise polarization studies. No major bug fixes were recorded this month. Work tracked under a single, well-documented commit and aligned with PWGHF workflows.
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for AliceO2Group/O2Physics focusing on delivering targeted capability improvements for charm polarization analysis. The primary deliverable was a THnSparse histogram filling enhancement for the Charm Polarization task, enabling conditional filling when rotation background is not applied. This strengthens data analysis reliability and supports more precise polarization studies. No major bug fixes were recorded this month. Work tracked under a single, well-documented commit and aligned with PWGHF workflows.
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 - AliceO2Group/O2Physics: Key feature delivered was Charm Polarization Data Normalization, ensuring rapidity values are stored as absolute values to improve data consistency and downstream analysis accuracy. Major bugs fixed: none reported this month. Overall impact: improved data integrity for polarization analyses and smoother analytics pipelines, enabling more reliable modeling and faster decision-making. Technologies/skills demonstrated: data normalization, handling of rapidity representations in polarization data, commit-driven change management (commit 85604b411089c89d563e75560a81bf62bc8f5335) and alignment with analytics requirements.
1 Commits • 1 Features
Mar 1, 2026March 2026 - AliceO2Group/O2Physics: Key feature delivered was Charm Polarization Data Normalization, ensuring rapidity values are stored as absolute values to improve data consistency and downstream analysis accuracy. Major bugs fixed: none reported this month. Overall impact: improved data integrity for polarization analyses and smoother analytics pipelines, enabling more reliable modeling and faster decision-making. Technologies/skills demonstrated: data normalization, handling of rapidity representations in polarization data, commit-driven change management (commit 85604b411089c89d563e75560a81bf62bc8f5335) and alignment with analytics requirements.
March 2026
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for AliceO2Group/O2Physics: Focused on reliability and data quality for event-plane analyses. Delivered a targeted configuration fix in the CharmPolarisation module that corrects histogram bin edges, improving data representation and downstream analysis accuracy. The change strengthens trust in physics results and supports reproducible workflows.
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for AliceO2Group/O2Physics: Focused on reliability and data quality for event-plane analyses. Delivered a targeted configuration fix in the CharmPolarisation module that corrects histogram bin edges, improving data representation and downstream analysis accuracy. The change strengthens trust in physics results and supports reproducible workflows.
August 2025
1 Commits
Aug 1, 2025Performance review for 2025-08: Delivered a robustness fix for centrality filtering in O2Physics, significantly improving stability and data quality in centrality-based selections. Addressed a loop-control bug in taskCharmPolarisation.cxx by replacing an erroneous 'return' with 'continue', ensuring collisions outside the centrality range are skipped rather than exiting the function prematurely. The change is tracked in commit 5589eaba8c3a813861cb5f02541b128850d2dcb2 and PR #12743. This fix reduces edge-case failures, enhances analytics reliability, and shortens debugging cycles. Skills demonstrated include C++ debugging, rigorous code review, and regression-friendly changes with clear traceability to a single repository.
1 Commits
Aug 1, 2025Performance review for 2025-08: Delivered a robustness fix for centrality filtering in O2Physics, significantly improving stability and data quality in centrality-based selections. Addressed a loop-control bug in taskCharmPolarisation.cxx by replacing an erroneous 'return' with 'continue', ensuring collisions outside the centrality range are skipped rather than exiting the function prematurely. The change is tracked in commit 5589eaba8c3a813861cb5f02541b128850d2dcb2 and PR #12743. This fix reduces edge-case failures, enhances analytics reliability, and shortens debugging cycles. Skills demonstrated include C++ debugging, rigorous code review, and regression-friendly changes with clear traceability to a single repository.
August 2025
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 performance highlights for AliceO2Group/O2Physics. Delivered targeted PbPb spin and polarisation analysis enhancements (Dstar and Charm) and fixed data quality issues to enable more robust physics studies. Implemented event-plane based calculations for Dstar spin alignment and refactored the codebase to support direct collision iteration and flexible Q-vector handling for Charm polarisation. Fixed a Dstar mass assignment bug and extended MC data columns to capture additional information, improving data collection and downstream analyses. Overall, these changes enhance analysis reliability, data quality, and scientific reach, with clear business value for PbPb physics programs and MC-driven studies.
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 performance highlights for AliceO2Group/O2Physics. Delivered targeted PbPb spin and polarisation analysis enhancements (Dstar and Charm) and fixed data quality issues to enable more robust physics studies. Implemented event-plane based calculations for Dstar spin alignment and refactored the codebase to support direct collision iteration and flexible Q-vector handling for Charm polarisation. Fixed a Dstar mass assignment bug and extended MC data columns to capture additional information, improving data collection and downstream analyses. Overall, these changes enhance analysis reliability, data quality, and scientific reach, with clear business value for PbPb physics programs and MC-driven studies.
Activity
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Quality Metrics
Correctness93.8%
Maintainability86.2%
Architecture86.2%
Performance83.8%
AI Usage25.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++C++ DevelopmentC++ programmingCMakeData AnalysisData ModelingData ProcessingHeavy-Ion CollisionsHigh Energy PhysicsHigh Energy Physics AnalysisParticle PhysicsPhysics AnalysisPhysics SimulationSoftware Engineeringdata analysis
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