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arXiv · 2609.10327

Towards new D meson fragmentation functions

Manuel Epele·Felix Hekhorn·Ilkka Helenius·Hannu Paukkunen·Pia Zurita
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Abstract

The Heavy Meson (Hymn) collaboration presents a new extraction of D meson fragmentation functions using experimental data from LEP and LHC. We focus particularly on kinematical regimes where perturbative QCD should be safely applicable to avoid contamination from higher-twist effects which could lead to an apparent process dependence of fragmentation functions. We account for the initial-state radiation and, as a novel ingredient, consider the prompt and non-prompt contributions separately. The analysis is carried out at next-to-leading order accuracy including uncertainty estimation based on Monte-Carlo replica technique. We disucss the exemplary case of $\mathrm{D}^0$ here and defer the results for $\mathrm{D}^\pm$ and $\mathrm{D}^{*,\pm}$ to a forthcoming publication.

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Manuel Epele, Felix Hekhorn, Ilkka Helenius, Hannu Paukkunen, Pia Zurita. 2026-09-09. Towards new D meson fragmentation functions. https://arxiv.org/abs/2609.10327

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