Determining the glue component of the nucleon
| Autor: | Horsley, Roger, Howson, T., QCDSF-UKQCD-CSSM Collaboration, Kamleh, W., Nakamura, Yoshifumi, Perlt, H., Rakow, P. E. L., Schierholz, Gerrit, Stüben, H., Young, Jordan, Zanotti, James Michael |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
operator: renormalization
nonperturbative [renormalization] High Energy Physics::Lattice Nuclear Theory FOS: Physical sciences Signal operator [gluon] Momentum High Energy Physics - Lattice Component (UML) renormalization [operator] ddc:530 quantum chromodynamics: quenching Statistical physics renormalization: nonperturbative GLUE quenching [quantum chromodynamics] numerical calculations Physics Quantum chromodynamics gluon: operator fluctuation Operator (physics) High Energy Physics - Lattice (hep-lat) High Energy Physics::Phenomenology nucleon statistical [error] gluon Gluon error: statistical Nucleon |
| Zdroj: | Scopus-Elsevier Proceedings of Science Proceedings of Science / International School for Advanced Studies (LATTICE2019), 220 (2020). doi:10.22323/1.363.0220 37th International Symposium on Lattice Field Theory, Lattice 2019, Wuhan, China, 2019-06-16-2019-06-22 |
| DOI: | 10.3204/PUBDB-2021-01474 |
| Popis: | Computing the gluon component of momentum in the nucleon is a difficult and computationally expensive problem, as the matrix element involves a quark-line-disconnected gluon operator which suffers from ultra-violet fluctuations. But also necessary for a successful determination is the non-perturbative renormalisation of this operator. As a first step we investigate here this renormalisation in the RI-MOM scheme. Using quenched QCD as an example, a statistical signal is obtained in a direct calculation using an adaption of the Feynman-Hellmann technique. Comment: 7 pages, Proceedings of the 37th Annual International Symposium on Lattice Field Theory (Lattice 2019), 16-22 June 2019, Wuhan, China |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|