Moments of Parton Distributions Functions from Lattice QCD at the Physical Point

Marcel Rodekamp; Michael Engelhardt; Jeremy R. Green; Stefan Krieg; Stefan Meinel; John W. Negele; Andrew Pochinsky; Sergey Syritsyn

arXiv · 2306.14431

Moments of Parton Distributions Functions from Lattice QCD at the Physical Point

Marcel Rodekamp·Michael Engelhardt·Jeremy R. Green·Stefan Krieg·Stefan Meinel·John W. Negele·Andrew Pochinsky·Sergey Syritsyn

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Abstract

We present a Lattice QCD calculation of the second Mellin moments of the nucleon axial, vector and tensor parton distribution functions (PDFs). The calculation is performed at the physical pion mass with two different lattice spacings, and includes both zero and non-zero nucleon momenta. In our preliminary analysis, we identify operators that greatly reduce excited-state contamination.

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Marcel Rodekamp, Michael Engelhardt, Jeremy R. Green, Stefan Krieg, Stefan Meinel, John W. Negele, Andrew Pochinsky, Sergey Syritsyn. 2023-07-07. Moments of Parton Distributions Functions from Lattice QCD at the Physical Point. https://arxiv.org/abs/2306.14431

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