This workshop marks the first general meeting of the LHC Reinterpretation (REI) Working Group, which succeeds the LHC Reinterpretation Forum (RIF). Its goal is to review recent developments in tools, phenomenology, and experimental approaches, with a particular focus on data and analysis preservation and reuse.
The programme will emphasise current and future progress in analysis preservation and reinterpretation, along with recommendations for best practices. A dedicated session will highlight recent reinterpretation studies, and contributions from other LHC working groups are strongly encouraged to foster cross-collaboration.
Background
The REI Working Group provides a platform for ongoing discussion of topics related to beyond-the-Standard-Model (BSM) reinterpretation of LHC data, including the development of public recasting tools and supporting infrastructure.
To date, nine RIF workshops have been held at CERN, Fermilab, Imperial College London, and IPPP Durham. These efforts led to key community outputs, including:
- Reinterpretation of LHC Results for New Physics: Status and recommendations after Run 2 (2020, SciPostPhys.9.2.022)
- Publishing statistical models: Getting the most out of particle physics experiments (2021, SciPostPhys.12.1.037)
- Snowmass input: Data and analysis preseration, recasting and reinterpretation (2022, arXiv:2203.10057)
- European Strategy for Particle Physics Update (ESPPU) input: Reinterpretation and preservation of data and analyses in HEP (2025, arXiv:2504.00256).
Since 2025, the Forum has been integrated into the LPCC-organised LHC BSM working group.