QCD analysis of pion fragmentation functions in the xFitter framework
| Autor: | span> Developers’ Team, Francesco Giuli, x fitter, Hamed Abdolmaleki, Hamzeh Khanpour, Simone Amoroso, Fredrick Olness, Maryam Soleymaninia, A. Glazov, Oleksandr Zenaiev, A. Luszczak |
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| Rok vydání: | 2021 |
| Předmět: |
perturbation theory [quantum chromodynamics]
production [pi] Particle physics High Energy Physics::Lattice Nuclear Theory FOS: Physical sciences BELLE pi: production 01 natural sciences Pion High Energy Physics - Phenomenology (hep-ph) statistical analysis pi: fragmentation function 0103 physical sciences ddc:530 quantum chromodynamics: perturbation theory numerical calculations 010306 general physics Nuclear Experiment Particle Physics - Phenomenology Quantum chromodynamics Physics fragmentation function [pi] Annihilation 010308 nuclear & particles physics higher-order: 2 higher-order: 1 Fragmentation (computing) Perturbative QCD hep-ph 2 [higher-order] High Energy Physics - Phenomenology High Energy Physics::Experiment 1 [higher-order] |
| Zdroj: | Physical Review Physical review / D 104(5), 056019 (2021). doi:10.1103/PhysRevD.104.056019 |
| DOI: | 10.48550/arxiv.2105.11306 |
| Popis: | Physical review / D 104(5), 056019 (2021). doi:10.1103/PhysRevD.104.056019 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. Published by Inst., Melville, NY |
| Databáze: | OpenAIRE |
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