Back to Search
Start Over
Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD
- Publication Year :
- 2022
-
Abstract
- We present a simultaneous extraction of the moments of $F_2$ and $F_L$ structure functions of the proton for a range of photon virtuality, $Q^2$. This is achieved by computing the forward Compton amplitude on the lattice utilizing the second-order Feynman-Hellmann theorem. Our calculations are performed on configurations with two different lattice spacings and volumes, all at the $SU(3)$ symmetric point. We find the moments of $F_{2}$ and $F_{L}$ in good agreement with experiment. Power corrections turn out to be significant. This is the first time the $Q^2$ dependence of the lowest moment of $F_2$ has been quantified.<br />Comment: 14 pages, 11 figures, 2 tables. Version to appear in PRD
- Subjects :
- High Energy Physics - Lattice
High Energy Physics - Phenomenology
Nuclear Theory
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2209.04141
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.107.054503