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Towards Unpolarized GPDs from Pseudo-Distributions

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arxiv 2405.10304 v2 pith:YPIIDZX2 submitted 2024-05-16 hep-lat hep-ph

Hervé Dutrieux , Robert G. Edwards , Colin Egerer , Joseph Karpie , Christopher Monahan , Kostas Orginos , Anatoly Radyushkin , David Richards
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Eloy Romero Savvas Zafeiropoulos
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classification hep-lathep-ph
keywords gpdsunpolarizedadvantageapproachcoveragedependencedistillationdistributions
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abstract

We present an exploration of the unpolarized isovector proton generalized parton distributions (GPDs) $H^{u-d}(x, \xi, t)$ and $E^{u-d}(x, \xi, t)$ in the pseudo-distribution formalism using distillation. Taking advantage of the large kinematic coverage made possible by this approach, we present results on the moments of GPDs up to the order $x^3$ -- including their skewness dependence -- at a pion mass $m_\pi = 358$ MeV and a lattice spacing $a = 0.094$ fm.

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Forward citations

Cited by 7 Pith papers

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

  1. Reconstructing the full kinematic dependence of GPDs from pseudo-distributions

    hep-lat 2026-04 unverdicted novelty 8.0 of 10

    Lattice QCD pseudo-distributions at m_π=358 MeV are inverted via multidimensional Gaussian process regression to reconstruct the full kinematic dependence of GPDs H^{u-d} and E^{u-d} while directly extracting double d...

  2. Mellin Moments of Pion and Kaon Unpolarized PDFs from Nonlocal Operators in Lattice QCD

    hep-lat 2026-06 unverdicted novelty 6.0 of 10

    First lattice QCD results for Mellin moments of pion and kaon unpolarized PDFs from nonlocal operator matrix elements on a 32^3×64 twisted-mass ensemble at m_π=260 MeV, extracted at NNLO and μ=2 GeV.

  3. Gradient flow for parton distribution functions: first application to the pion

    hep-lat 2025-09 conditional novelty 6.0 of 10

    Pion PDF moment ratios up to <x^5> were extracted from lattice QCD with gradient flow and agree with phenomenological fits.

  4. Analytic decomposition of two-body electroweak processes with left-hand cuts

    hep-lat 2026-07 accept novelty 5.0 of 10

    An on-shell decomposition of 2+J o2 electroweak amplitudes isolates OPE poles, logs, and triangle singularities, leaving only smooth short-distance functions.

  5. Constraining DVCS Compton Form Factors Using Lattice QCD informed Neural Network

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    A neural network framework informed by lattice QCD uses all-order dispersion relations to significantly constrain both real and imaginary parts of Compton Form Factors extracted from DVCS proton data.

  6. Generalized parton distributions from lattice QCD

    hep-lat 2026-07 unverdicted novelty 2.0 of 10

    A review of lattice QCD extractions of GPDs via quasi- and pseudo-distributions, surveying results and advocating combined LaMET+SDF analyses and experiment-lattice synergies.

  7. The spectral reconstruction problem for thermal photon and dilepton rates

    hep-ph 2025-08 unverdicted novelty 2.0 of 10

    A proceedings review presents an improved estimator (lambda = 2) and new lattice QCD estimates for the thermal photon production rate from quark-gluon plasma.

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