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 distributions.
Chen et al., Phys
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Parton distribution functions can be extracted from current-current correlators via large momentum expansion to NLO, with preliminary lattice results from four-point functions.
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Reconstructing the full kinematic dependence of GPDs from pseudo-distributions
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 distributions.
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Parton Distribution Functions from Large Momentum Expansion of Current-Current Correlators
Parton distribution functions can be extracted from current-current correlators via large momentum expansion to NLO, with preliminary lattice results from four-point functions.