Fragmentation Functions of Charged Hadrons at Next-to-Next-to-Leading Order and Constraints on the Proton Parton Distribution Functions
We present the first global analysis of fragmentation functions for light charged hadrons (π^{±}, K^{±}) at full next-to-next-to-leading order in quantum chromodynamics, incorporating world data from both single-inclusive electron-positron annihilation and semi-inclusive deep-inelastic scattering. The collinear factorization has been tested with low-momentum-transfer data and has demonstrated success at high hadron momenta. Additionally, we study the impact of current global data on hadron production to the parton distribution functions (PDFs), and find they favor a reduced asymmetry in the strange (anti)quark PDFs, as compared to the asymmetry predicted by state-of-the-art PDFs derived from inclusive data.
Authors
- Jun Gao (ORCID: https://orcid.org/0000-0002-1227-8857)
- Hongxi Xing (ORCID: https://orcid.org/0000-0003-3503-7084)
- XiaoMin Shen (ORCID: https://orcid.org/0000-0002-5665-2556)
- Y. X. Zhao (ORCID: https://orcid.org/0000-0001-8684-9766)
- Bin Zhou (ORCID: https://orcid.org/0000-0002-1592-7015)
Institutions
- Shanghai Jiao Tong University (CN)
- South China Normal University (CN)
- Chinese Academy of Sciences (CN)
- Central China Normal University (CN)
- Kavli Institute for Particle Astrophysics and Cosmology (US)
- Key Laboratory of Guangdong Province (CN)
- Institute of Modern Physics (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-07-14
- DOI
- https://doi.org/10.1103/mcwy-b221
- Citations
- 6
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 11.22
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Key Laboratory of Advanced Ceramics and Processing Technology (Ministry of Education)