“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 16744
School of Particles and Accelerator
  Title:   QCD analysis of pion fragmentation functions in the xFitter framework
1.  Hamed Abdolmaleki
2.  Maryam Soleymaninia
3.  Hamzeh Khanpour
4.  Simone Amoroso
5.  Francesco Giuli
6.  Alexander Glazov
7.  Agnieszka Luszczak
8.  Fredrick Olness
9.  Oleksandr Zenaiev
  Status:   Published
  Journal: Phys. Rev. D
  No.:  056019
  Vol.:  104
  Year:  2021
  Supported by:  IPM
We present the first open-source analysis of fragmentation functions (FFs) of charged pions (entitled ipm-xfitter) performed 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, together with 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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