Analysis of Nuclear Fragmentation Functions for Pions with A and ν Dependence

@misc{li2026analysis,
  title = {{Analysis of Nuclear Fragmentation Functions for Pions with $A$ and $ν$ Dependence}},
  author = {Mengyang Li and Zijian Ye and Jun Gao and Xiaomin Shen and Hongxi Xing and Yuxiang Zhao},
  howpublished = {arXiv},
  year = {2026},
  month = jul,
  doi = {10.48550/arxiv.2607.08669},
  eprint = {2607.08669},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.08669},
}

TY  - UNPB
TI  - Analysis of Nuclear Fragmentation Functions for Pions with A and ν Dependence
AU  - Mengyang Li
AU  - Zijian Ye
AU  - Jun Gao
AU  - Xiaomin Shen
AU  - Hongxi Xing
AU  - Yuxiang Zhao
PY  - 2026
DA  - 2026/07/09
PB  - arXiv
DO  - 10.48550/arxiv.2607.08669
UR  - https://arxiv.org/abs/2607.08669
AB  - We present a QCD analysis of pion nuclear fragmentation functions (nFFs), which encode nuclear modifications to hadronization in high-energy nuclear collisions. Within this framework, vacuum fragmentation functions and their nuclear modifications are extracted simultaneously. The nuclear effects are parameterized as functions of the mass number A, the energy of the fragmenting parton in the target rest frame ν, and the hadron energy fraction z, allowing their dependence on these variables to be quantified. Our analysis includes semi-inclusive deep-inelastic scattering data on nuclear targets, with kinematic cuts chosen to ensure the applicability of perturbative QCD and collinear factorization. The resulting fit provides a good description of most datasets, with the nFFs well constrained in the energy fraction range z ∈ [0.2, 0.7]. Additionally, with our new nFFs, we present next-to-leading order predictions in pp and pA collisions, which show reasonable agreement with ALICE data within the current experimental uncertainties.
ER  -