Iterative HOMER with uncertainties
We present iHOMER, an iterative version of the HOMER method to extract Lund fragmentation functions from experimental data. Through iterations, we address the information gap between latent and observable phase spaces and systematically remove bias. To quantify uncertainties on the inferred weights, we use a combination of Bayesian neural networks and uncertainty-aware regression. We find that the combination of iterations and uncertainty quantification produces well-calibrated weights that accurately reproduce the data distribution. A parametric closure test shows that the iteratively learned fragmentation function is compatible with the true fragmentation function.
Authors
- P. Ilten (ORCID: https://orcid.org/0000-0001-5534-1732)
- Jure Zupan (ORCID: https://orcid.org/0000-0001-9445-537X)
- Tilman Plehn (ORCID: https://orcid.org/0000-0001-5660-7790)
- Christian Bierlich (ORCID: https://orcid.org/0000-0002-3978-6085)
- Manuel Szewc (ORCID: https://orcid.org/0000-0002-3014-5388)
- Anja Butter (ORCID: https://orcid.org/0000-0003-4525-6256)
- Ayodele Ore (ORCID: https://orcid.org/0000-0001-6925-3565)
- M. Wilkinson (ORCID: https://orcid.org/0000-0001-6561-2145)
- Tony Menzo (ORCID: https://orcid.org/0000-0002-2013-4570)
- Sofia Palacios Schweitzer
- S. Mrenna (ORCID: https://orcid.org/0000-0001-8731-160X)
- Benoît Assi
- Ahmed Youssef (ORCID: https://orcid.org/0000-0003-1585-4757)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Fermi National Accelerator Laboratory (US)
- Lund University (SE)
- Université Paris Cité (FR)
- Heidelberg University (DE)
- National University of General San Martín (AR)
- Sorbonne Université (FR)
- Laboratoire de Physique Nucléaire et de Hautes Énergies (FR)
- International Center for Advanced Studies (AR)
- University of Cincinnati (US)
Publication Details
- Journal
- SciPost Physics
- Published
- 2026-02-12
- DOI
- https://doi.org/10.21468/scipostphys.20.2.042
- Primary Topic
- Stability and Control of Uncertain Systems
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- U.S. Department of Energy
- Aspen Center for Physics
- Deutsche Forschungsgemeinschaft
- Bundesministerium für Bildung und Forschung
- Knut och Alice Wallenbergs Stiftelse
- Centre National de la Recherche Scientifique
- Sorbonne Université
- Université de Paris
- Office of Science
- Institut National de Physique Nucléaire et de Physique des Particules
- High Energy Physics