Investigating the low moments of the nucleon structure functions in lattice QCD

2021/10/04 by K. U. Can, A. Hannaford-Gunn, Can, K. U. +19
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2110.01310

openalex publication_date 2021/10/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We highlight QCDSF/UKQCD Collaboration's recent developments on computing the Compton amplitude directly via an implementation of the second order Feynman-Hellmann theorem. As an application, we compute the nucleon Compton tensor across a range of photon virtuality at an unphysical quark mass. This enables us to study the Q² dependence of the low moments of the nucleon structure functions in a lattice calculation for the first time. We present some selected results for the moments of the F₁, F₂ and F_L structure functions and discuss their implications.

Related

• The Compton amplitude and nucleon structure functions in lattice QCD
• Towards nucleon structure function moments and parton momentum fractions from lattice QCD
• The Lattice Calculation of Moments of Structure Functions
• Multi-nucleon matrix elements on the lattice with the Feynman-Hellmann theorem
• The lower moments of nucleon structure functions in lattice QCD with physical quark masses