We present the first open-source analysis of fragmentation functions (FFs) of charged pions (entitled IPM-xFitter) computed at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) accuracy in perturbative QCD using the xFitter framework. This study incorporates a comprehensive and up-to-date set of pion production data from single-inclusive annihilation (SIA) processes, as well as the most recent measurements of inclusive cross-sections of single pion by the BELLE collaboration. The determination of pion FFs along with their theoretical uncertainties is performed in the Zero-Mass Variable-Flavor Number Scheme (ZM-VFNS). We also present comparisons of our FFs set with recent fits from the literature. The resulting NLO and NNLO pion FFs provide valuable insights for applications in present and future high-energy analysis of pion final state processes.
@article{arxiv.2105.11306,
title = {QCD analysis of pion fragmentation functions in the xFitter framework},
author = {xFitter Collaboration and Hamed Abdolmaleki and Maryam Soleymaninia and Hamzeh Khanpour and Simone Amoroso and Francesco Giuli and Alexander Glazov and Agnieszka Luszczak and Fredrick Olness and Oleksandr Zenaiev},
journal= {arXiv preprint arXiv:2105.11306},
year = {2021}
}