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Towards a Global QCD Analysis of Fragmentation Functions at Next-To-Next-To-Leading Order Accuracy

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arxiv 2202.05060 v1 pith:Y32QM457 submitted 2022-02-10 hep-ph

Ignacio Borsa , Daniel de Florian , Rodolfo Sassot , Marco Stratmann , Werner Vogelsang This is my paper · ORCID
classification hep-ph
keywords fragmentationfunctionsnnloaccuracyanalysiscorrectionsdataglobal
verification ladder T0 review T1 audit T2 compute T3 formal
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We carry out a global QCD analysis of parton-to-pion fragmentation functions at next-to-next-to-leading order (NNLO) accuracy by performing a fit to the combined set of single-inclusive electron-positron annihilation and, for the first time, semi-inclusive deep-inelastic scattering (SIDIS) multiplicity data. For the latter, we utilize the approximate NNLO QCD corrections that were derived recently within the threshold resummation formalism. We explore the impact of the NNLO corrections on the description of the SIDIS data sets in various kinematic regimes and on the resulting pion fragmentation functions.

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Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Next-to-next-to-leading-order QCD corrections to ${}^3S_1^{(8)}$ gluon fragmentation function for quarkonium

    hep-ph 2026-06 unverdicted novelty 8.0 of 10

    First NNLO QCD short-distance coefficients for the ³S₁⁽⁸⁾ gluon fragmentation function are obtained numerically to high precision, with analytic endpoint logarithms reconstructed for threshold resummation.

  2. Dihadron Angular Correlations in the $e^+e^-$ Collision

    hep-ph 2025-06 conditional novelty 7.0 of 10

    The paper derives the first complete O(alpha_s^2) analytic QCD corrections to the dihadron angular separation distribution in e+e- annihilation, with verified cancellation of infrared poles.

  3. Benchmarking the Nearside Energy-Energy Correlators with Mellin Transform

    hep-ph 2026-07 conditional novelty 6.0 of 10

    A Mellin-transform framework with one fitted transition scale Λ describes nearside EECs in e+e− annihilation at NNLO+NNLL accuracy across ALEPH and earlier data.

  4. Precise QCD Predictions for Hadron-in-jet Production in $e^+e^-$ Collisions

    hep-ph 2026-02 conditional novelty 6.0 of 10

    First NNLO QCD predictions for hadron-in-jet cross sections in e+e- two- and three-jet events, with ALEPH comparisons showing improved convergence when the fragmentation scale is set by the jet resolution.

  5. Phenomenological extraction of fragmentation functions in a $p\bar{p}$ environment

    hep-ph 2026-07 conditional novelty 4.5 of 10

    Kinematic cuts in Tevatron p-pbar photon-hadron production make cross-section ratios of kaons to pions approximate u-quark fragmentation-function ratios, enabling flavour-separated FF constraints.

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