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Systematic uncertainties from higher-twist corrections in DIS at large x

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arxiv 2501.06849 v2 pith:BDID7VOP submitted 2025-01-12 hep-ph hep-exnucl-th

Matteo Cerutti , Alberto Accardi , Ishara P. Fernando , Shujie Li , Joseph F. Owens , Sanghwa Park This is my paper
classification hep-phhep-exnucl-th
keywords correctionshigher-twistbiasesdeuteronlargestructuresystematicuncertainties
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abstract

We investigate the systematic uncertainties and potential biases arising from the inclusion of large-$x$ corrections to proton and deuteron deep inelastic scattering (DIS) data in global quantum chromodynamics (QCD) analyses. Using the CTEQ-JLab framework, we examine various approaches to implementing higher-twist corrections in nucleon structure functions and off-shell PDF modifications in deuteron targets. We analyze how these components interact and influence the determination of the $d$-quark PDF and the neutron structure function at large $x$. We find that it is very important to consider isospin-dependent higher-twist corrections in order to minimize implementation biases in the extracted quantities.

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Cited by 4 Pith papers

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

  1. Isospin dependence of nuclear EMC effect from global QCD analysis

    hep-ph 2026-02 conditional novelty 7.0 of 10

    Nucleon parton distributions must include off-shell (binding) corrections to describe A=2,3 DIS data, with evidence for an isovector component that changes the extracted nuclear EMC ratios.

  2. Pionic gluons from global QCD analysis of experimental and lattice data

    hep-ph 2025-07 conditional novelty 7.0 of 10

    A global fit of pion parton distributions including lattice gluon data reduces uncertainties on the high-x gluon PDF and indicates a gluon enhancement in the pion over the proton.

  3. Decoding the proton's gluonic density with lattice QCD-informed machine learning

    hep-ph 2025-07 conditional novelty 6.0 of 10

    A variational autoencoder inverse mapper extracts the proton's gluon PDF from lattice QCD pseudo-Ioffe-time distributions, yielding results consistent with global fits.

  4. NNLO Determination of Polarized Parton Distribution Functions with Higher-Twist and Target-Mass Corrections

    hep-ph 2026-07 accept novelty 4.0 of 10

    KLS26 is an NNLO polarized PDF set from inclusive DIS that includes TMC, additive and multiplicative higher-twist terms, and positivity, with the largest NNLO shifts in the strange-quark helicity distribution.

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