Publications
Publication Information
| Title | Unpolarized gluon distribution in the nucleon from lattice quantum chromodynamics |
| Authors | Md Tanjib Atique Khan, Raza Sufian, Joseph Karpie, Christopher Monahan, Colin Egerer, Balint Joo, Wayne Morris, Konstantinos Orginos, Anatoly Radyushkin, David Richards, Eloy Romero Alcalde, Savvas Zafeiropoulos |
| JLAB number | JLAB-THY-21-3469 |
| LANL number | arXiv:2107.08960 |
| Other number | DOE/OR/23177-5280 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review D Volume 104 Page(s) 094516 Refereed | |
| Publication Abstract: | In this study, we present a determination of the unpolarized gluon Ioffe-time distribution in the nucleon from a first-principles lattice quantum chromodynamics calculation. We carry out the lattice calculation on a $32^3\times 64$ ensemble with a pion mass of $358$ MeV and lattice spacing of $0.094$ fm. We construct the nucleon interpolating fields using the distillation technique, flow the gauge fields using the gradient flow, and solve the summed generalized eigenvalue problem to determine the glounic matrix elements. Combining these techniques allows us to provide a statistically well-controlled Ioffe-time distribution and unpolarized gluon PDF. We obtain the flow time independent reduced Ioffe-time pseudo-distribution, and calculate the light-cone Ioffe-time distribution and unpolarized gluon distribution function in the $\ms$ scheme at $\mu = 2$ GeV, neglecting the mixing of the gluon operator with the quark singlet sector. Finally, we compare our results to phenomenological determinations. |
| Experiment Numbers: | |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.104.094516 |
| Accepted Manuscript: | PhysRevD.104.094516.pdf |
| Supporting Documents: | |
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