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Dr Ulrich Schwickerath (CERN)05/03/2026, 14:20
This presentation is a wrap up of where we are with data preservation for the
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LEP experiments, 25 years after the end of data taking. It will focus on
recent developments since the last workshop, and cover the status of supporting
tools like CERNLIB and OpenPHIGS, which are common to at least some of the
experiments. While LEP data is mostly available today, with the exception of
L3, an... -
Michal Lukeš (FZU)05/03/2026, 14:40
EOCS-CZ activities include the creation of several data repositories for various scientific fields. The repository for High Energy Physics and Astroparticle Physics is currently under construction. Data from the LEP experiment DELPHI, already preserved in the CERN Open Data Portal, serve as the first use case for the new repository. The motivation is to maintain an additional copy of these...
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Luka Lambrecht (Brown University (US))05/03/2026, 15:00
Recently, the 1994 dataset from the ALEPH experiment was converted into EDM4HEP format. Using this archived and converted ALEPH data, we apply modern software intended for FCC studies to process the data and train and employ state-of-the art, deep-learning based jet-tagging techniques. We obtain significant improvements in heavy-flavour tagging performance with respect to the legacy...
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Dietrich Liko (Austrian Academy of Sciences (AT))05/03/2026, 15:20
The DELPHI experiment at CERN has released its complete Open Data legacy in SDST format, traditionally analyzed using the Fortran-based SKELANA tool. This limits accessibility and integration with modern analysis frameworks. We present a conversion pipeline that transforms DELPHI's SDST data—both real and simulated—into the EDM4HEP standard, enabling analysis within modern Python and C++...
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Graham Wilson (The University of Kansas (US))05/03/2026, 15:40
Recently, I have been working on finding out how feasible it is to do analysis with the OPAL data again. I have been amazed and really excited by the possibilities that are at hand. After quickly being able to reproduce the results on radiative neutrino counting from a dataset we published in 2000, it is planned to complete and publish this analysis for the whole LEP2 dataset of OPAL. I also...
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Thomas McCauley (University of Notre Dame (US))05/03/2026, 16:15
Since the first release of open data from an LHC experiment by CMS in 2014 the CMS Open Data program has matured into a sustained pipeline of data to the public. These data (nearly 5 PB of real and simulated collisions) have found extensive use in educational programs as well as in the larger research community. This talk will describe the content of CMS Open Data and how it has been used for...
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Zach Marshall (Lawrence Berkeley National Lab. (US))05/03/2026, 16:35
ATLAS has significantly expanded its Open Data offerings since the last DPHEP Workshop, with new releases of Open Data for Education based on the Open Data for Research that was released in 2024 as well as the first releases of Open Heavy Ion Data and Open Event Generation Data. The first tutorial on ATLAS Open Data was held in November of 2025: a broad audience engaged with the latest...
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Dillon Fitzgerald (University of Michigan (US))05/03/2026, 16:55
The LHCb collaboration at the LHC has accumulated ${\sim}700$ scientific publications, making it increasingly important to preserve analysis workflows to facilitate both reusability and reinterpretation of the results and collected data. Data and analysis preservation are important steps towards producing publications at LHCb, with Run 3 ntuple production for user analysis centralized in a way...
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David Dobrigkeit Chinellato (Austrian Academy of Sciences (AT))05/03/2026, 17:15
The current status of data preservation efforts in the ALICE collaboration will be discussed, with emphasis on the preservation of Run 1 and 2 data using the data format developed for Run 3 and 4 in the context of the ALICE O2 project. The change to this new format and the associated framework bring about a significant data size reduction and provides a flat data structure to ensure fast I/O....
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Daniel Britzger (Max-Planck-Institut für Physik München)05/03/2026, 17:35
The H1 experiment at HERA was taking data from 1992 to 2007. A long-term data preservation system was set up in 2015 at DESY, Hamburg. The system permits the analysis of H1 data on the National Analysis Facility NAF at DESY. This talk summarizes the H1 data analysis model, recent physics results, and recent develpoments related to data preservation.
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Dr Marcus Ebert (University of Victoria)05/03/2026, 17:55
BaBar has been operating its current long term data and analysis system since 2021. The presentation reports on the status of the preservation of BaBar's data and the ability to do new analyses, challenges faced and future steps that are needed for continuing data preservation.
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Dr Jerome LAURET (Brookhaven National Laboratory)06/03/2026, 14:10
The RHIC Data and Analysis Preservation Program (DAPP) at Brookhaven National Laboratory is a comprehensive initiative in nuclear physics, safeguarding 25 years of data, software, and institutional knowledge from the PHENIX, STAR, and sPHENIX experiments. As the community transitions to the Electron-Ion Collider (EIC) era, DAPP offers a complete model for preserving scientific value beyond the...
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Rik Gran (University of Minnesota Duluth)06/03/2026, 14:30
The MINERvA experiment specializes in studying neutrino interactions and producing neutrino cross section measurements, especially to support current and future oscillation experiments. After several years of preparation, we released our open data product and announced it to the most interested community at a conference in October 2025. minerva.fnal.gov/opendata It includes data and...
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Andrew Stephen Chisholm (University of Birmingham (GB))06/03/2026, 14:50
Many of the defining advances in particle physics during the mid twentieth century were made at bubble chamber experiments. The particle physics group of the University of Birmingham have a rich history of involvement in bubble chamber experiments dating back to the 1950s. As part of this legacy, the group hold an extensive collection of photographic film (tens of thousands of frames) recorded...
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