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Towards a Global QCD Analysis of Fragmentation Functions at Next-To-Next-To-Leading Order Accuracy
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Towards a Global QCD Analysis of Fragmentation Functions at Next-To-Next-To-Leading Order Accuracy
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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.
Forward citations
Cited by 8 Pith papers
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Next-to-next-to-leading-order QCD corrections to ${}^3S_1^{(8)}$ gluon fragmentation function for quarkonium
First NNLO QCD calculation of the ³S₁⁽⁸⁾ gluon fragmentation function in NRQCD, yielding positive substantial corrections and endpoint logarithms for threshold resummation.
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Next-to-next-to-leading-order QCD corrections to ${}^3S_1^{(8)}$ gluon fragmentation function for quarkonium
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.
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First next-to-next-to-leading-order extraction of fragmentation functions for Lambda hyperons
First NNLO global extraction of Lambda hyperon fragmentation functions from SIA and SIDIS data via neural-network parametrization.
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Determination of Fragmentation Functions from Charge Asymmetries in Hadron Production
Non-singlet fragmentation functions of pions and kaons are determined at NNLO QCD from charge asymmetry measurements in e+e- annihilation and SIDIS, yielding a scaling index of 0.7 and strangeness suppression of 0.5.
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Benchmarking the Nearside Energy-Energy Correlators with Mellin Transform
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.
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Precise QCD Predictions for Hadron-in-jet Production in $e^+e^-$ Collisions
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.
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Revisiting Unidentified Charged-Hadron Fragmentation Functions with Modern COMPASS SIDIS Multiplicities
Global QCD fit at NLO and NNLO extracts unidentified charged-hadron fragmentation functions from SIA plus modern COMPASS SIDIS multiplicities, producing publicly available HAPS-hFF1.0 replicas with improved light-quar...
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Phenomenological extraction of fragmentation functions in a $p\bar{p}$ environment
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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