# Unpolarized and Helicity Generalized Parton Distributions of the Proton within Lattice QCD.

@article{Alexandrou2020UnpolarizedAH, title={Unpolarized and Helicity Generalized Parton Distributions of the Proton within Lattice QCD.}, author={Constantia Alexandrou and Krzysztof Cichy and Martha Constantinou and K. Hadjiyiannakou and Karl Jansen and Aurora Scapellato and Fernanda Steffens}, journal={Physical review letters}, year={2020}, volume={125 26}, pages={ 262001 } }

We present the first calculation of the x dependence of the proton generalized parton distributions (GPDs) within lattice QCD. Results are obtained for the isovector unpolarized and helicity GPDs. We compute the appropriate matrix elements of fast-moving protons coupled to nonlocal operators containing a Wilson line. We present results for proton momenta 0.83,1.25,1.67 GeV, and momentum transfer squared 0.69,1.38 GeV^{2}. These combinations include cases with zero and nonzero skewness. The…

## 15 Citations

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- Physics
- 2021

Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou, Kyriakos Hadjiyiannakou, Karl Jansen, Aurora Scapellatod,∗ and Fernanda Steffens f Department of Physics, Temple University, Philadelphia,…