1. Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD
- Author
-
Batelaan, M., Can, K. U., Hannaford-Gunn, A., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M., QCDSF/UKQCD/CSSM Collaboration, CSSM Collaboration, UKQCD Collaboration, and QCDSF Collaboration
- Subjects
longitudinal ,Nuclear Theory ,nucl-th ,photon ,High Energy Physics - Lattice (hep-lat) ,lattice field theory ,hep-lat ,FOS: Physical sciences ,hep-ph ,structure function [p] ,p, structure function ,Nuclear Theory (nucl-th) ,transverse ,High Energy Physics - Phenomenology ,High Energy Physics - Lattice ,High Energy Physics - Phenomenology (hep-ph) ,ddc:530 ,p: structure function - Abstract
Physical review / D 107(5), 054503 (2023). doi:10.1103/PhysRevD.107.054503, 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., Published by Inst., Woodbury, NY
- Published
- 2023
- Full Text
- View/download PDF