Status of Average-x from Lattice QCD
High Energy Physics - Lattice
2015-05-27 v1 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Abstract
As algorithms and computing power have advanced, lattice QCD has become a precision technique for many QCD observables. However, the calculation of nucleon matrix elements remains an open challenge. I summarize the status of the lattice effort by examining one observable that has come to represent this challenge, average-x: the fraction of the nucleon's momentum carried by its quark constituents. Recent results confirm a long standing tendency to overshoot the experimentally measured value. Understanding this puzzle is essential to not only the lattice calculation of nucleon properties but also the broader effort to determine hadron structure from QCD.
Keywords
Cite
@article{arxiv.1103.3655,
title = {Status of Average-x from Lattice QCD},
author = {Dru B. Renner},
journal= {arXiv preprint arXiv:1103.3655},
year = {2015}
}
Comments
proceedings for 3rd International Workshop on Nucleon Structure at Large Bjorken x