5 papers
Femtoscale imaging of the proton with Ioffe-time distributions
Robert G. Edwards, Joe Karpie, Christopher Monahan +5
Mapping how strongly interacting constituents are distributed within protons is a key goal of nuclear physics and a major direction of the future Electron Ion Collider program. We…
Reconstructing the full kinematic dependence of GPDs from pseudo-distributions
Hervé Dutrieux, Robert G. Edwards, Joe Karpie +7
We propose a reconstruction of the full dependence of unpolarized isovector proton generalized parton distributions (GPDs) and from lattice QCD data…
Accessing the Gluon Momentum Fraction of Nucleons through the Gradient Flow
Robert Edwards, Joe Karpie, Lorenzo Maio +5
We calculate the gluon momentum fraction of the nucleon using lattice quantum chromodynamics (QCD), with a nonperturbative renormalization technique based on the gradient flow. The…
Comment on "LaMET's Asymptotic Extrapolation vs. Inverse Problem"
Hervé Dutrieux, Joe Karpie, Christopher J. Monahan +4
In arXiv:2504.17706 {Dutrieux:2025jed} we criticized the excessive model-dependence introduced by rigid few-parameter fits to extrapolate lattice data in the large momentum effecti…
Inverse problem in the LaMET framework
Hervé Dutrieux, Joe Karpie, Christopher J. Monahan +4
One proposal to compute parton distributions from first principles is the large momentum effective theory (LaMET), which requires the Fourier transform of matrix elements computed…