%0 Electronic Article
%A Scapellato, Aurora
%A Alexandrou, Constantia
%A Cichy, Krzysztof
%A Constantinou, Martha
%A Hadjiyiannakou, Kyriakos
%A Jansen, Karl
%A Steffens, Fernanda
%T Proton generalized parton distributions from lattice QCD
%N arXiv:2201.06519
%M PUBDB-2022-06436
%M arXiv:2201.06519
%D 2022
%Z Invited talk at the Hadron 2021 conference. 7 pages, 4 figures
%X Momentum and spatial distributions of quarks and gluons inside hadrons are typically encoded in the so-called generalized parton distributions (GPDs). GPDs are multi-dimensional quantities that are very challenging to extract, both experimentally and within lattice QCD. We present the first lattice results on the x-dependence of isovector unpolarized, helicity and transversity GPDs of the proton, obtained from lattice QCD using an ensemble of Nf = 2 + 1 + 1 maximally twisted mass fermions, with pion mass Mπ = 260 MeV and lattice spacing a ' 0.093 fm. Our calculations use the quasi-distribution formalism and the final distributions are presented in the MS scheme at a renormalization scale of 2 GeV.
%K p: generalized parton distribution (INSPIRE)
%K parton: distribution function (INSPIRE)
%K generalized parton distribution: transversity (INSPIRE)
%K quark: spatial distribution (INSPIRE)
%K fermion: mass: twist (INSPIRE)
%K pi: mass (INSPIRE)
%K scale: renormalization (INSPIRE)
%K lattice field theory (INSPIRE)
%K lattice (INSPIRE)
%K flavor: 4 (INSPIRE)
%K isovector (INSPIRE)
%K gluon (INSPIRE)
%K helicity (INSPIRE)
%K higher-dimensional (INSPIRE)
%K hadron (INSPIRE)
%K lattice QCD (autogen)
%K Lattice QCD (autogen)
%K nucleon structure (autogen)
%K generalized parton distributions (autogen)
%K 11.15.Ha (autogen)
%K 12.38.Gc (autogen)
%K 12.60.-i (autogen)
%K 12.38.Aw (autogen)
%F PUB:(DE-HGF)25
%9 Preprint
%U https://bib-pubdb1.desy.de/record/484674