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Systematic uncertainties in parton distribution functions from lattice QCD simulations at the physical point

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arxiv 1902.00587 v1 pith:3QI5PIX3 submitted 2019-02-01 hep-lat hep-ph

Systematic uncertainties in parton distribution functions from lattice QCD simulations at the physical point

Constantia Alexandrou , Krzysztof Cichy , Martha Constantinou , Kyriakos Hadjiyiannakou , Karl Jansen , Aurora Scapellato , Fernanda Steffens This is my paper
classification hep-lat hep-ph
keywords systematiccomputationdistributionfunctionsgivelatticemassparton
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a detailed study of the helicity-dependent and helicity-independent collinear parton distribution functions (PDFs) of the nucleon, using the quasi-PDF approach. The lattice QCD computation is performed employing twisted mass fermions with a physical value of the light quark mass. We give a systematic and in-depth account of the salient features entering in the evaluation of quasi-PDFs and their relation to the light-cone PDFs. In particular, we give details for the computation of the matrix elements, including the study of the various sources of systematic uncertainties, such as excited states contamination. In addition, we discuss the non-perturbative renormalization scheme used here and its systematics, effects of truncating the Fourier transform and different matching prescriptions.

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Cited by 5 Pith papers

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  3. Pion and Kaon PDFs from Lattice QCD via Large Momentum Effective Theory and Short-Distance Factorization

    hep-lat 2025-12 conditional novelty 5.0

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  4. Parton distribution functions of $\Delta^+$ on the lattice

    hep-lat 2019-07 unverdicted novelty 5.0

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