Month: 2026-03 — Highlights: Delivered a new HF Dielectron Monte Carlo Simulation Runner Script. This bash-based runner configures random number generation and selects the appropriate MC generator based on defined probabilities, enabling reproducible HF2ee simulations and smoother OO integration. This work improves automation, reproducibility, and throughput for HF dielectron analyses in the O2DPG stack. Key commit: PWGEM: Add HF2ee script for OO (#2290) with hash 22f8bf4203e7436c7e88eb2728ca8c0bf3f20183. No major bugs fixed this month; ongoing work focused on feature delivery and stability.

Month: 2025-09 – Key feature delivered: Dielectron production modeling in OO collisions with Pythia integrated into the O2DPG framework. The feature adds a new parameter for dielectron production in OO collisions using Pythia, updates decay tables, and includes a dedicated INI configuration file for the event generator cocktail, along with a validation test to ensure setup correctness. Implemented to support more accurate dielectron decay simulations in OO events.

August 2025 focused on delivering end-to-end improvements to MC prediction workflows and multi-energy MC configuration across O2Physics and O2DPG. In O2Physics, we added a new Particle Prediction Task to generate meson-spectra predictions from offline simulations, complete with a CMake-based workflow and histogram processing for pi0, eta, eta', rho, omega, and phi, plus primary-particle filtering and rapidity-based MC coordinates. A bug fix adjusted initialization to InitContext& and corrected eta-based filtering to ensure consistent predictions. In O2DPG, we introduced configurable Pythia8 setups to run MC events at 5.02, 5.36, and 7.0 TeV, with dedicated beam properties, energies, and decay limits to accelerate cross-energy analyses. These changes collectively improve prediction accuracy, reproducibility, and research throughput, enabling faster validation of physics analyses and detector performance.