“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
  Author(s): 
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
  Abstract:
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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