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arXiv · 2105.11306

QCD analysis of pion fragmentation functions in the xFitter framework

xFitter Collaboration·Hamed Abdolmaleki·Maryam Soleymaninia·Hamzeh Khanpour·Simone Amoroso·Francesco Giuli·Alexander Glazov·Agnieszka Luszczak·Fredrick Olness·Oleksandr Zenaiev
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Abstract

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.

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xFitter Collaboration, Hamed Abdolmaleki, Maryam Soleymaninia, Hamzeh Khanpour, Simone Amoroso, Francesco Giuli, Alexander Glazov, Agnieszka Luszczak, Fredrick Olness, Oleksandr Zenaiev. 2021-05-24. QCD analysis of pion fragmentation functions in the xFitter framework. https://doi.org/10.1103/physrevd.104.056019

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