The Glue Content of the Pion
Harvey B. Meyer, John W. Negele
TL;DR
This paper presents a lattice QCD calculation of the gluonic momentum fraction in the pion, exploring discretizations of the gluonic energy-momentum tensor and discussing implications for the momentum sum rule.
Contribution
It introduces new lattice techniques for computing the gluonic content of the pion and compares different discretizations for improved accuracy.
Findings
Gluonic momentum fraction in the pion quantified.
Different discretizations show consistent results.
Potential applications for future lattice studies discussed.
Abstract
We perform a quenched computation of the glue momentum fraction in the pion. Different discretizations of the gluonic energy-momentum tensor are studied on the lattice for that purpose. We discuss some implications based on the momentum sum rule. Finally we point out promising applications of the techniques developed here.
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