Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD
© 2018 authors. Published by the American Physical Society. We present the first nonperturbatively renormalized determination of the glue momentum fraction x g in the nucleon, based on lattice-QCD simulations at the physical pion mass using the cluster-decomposition error reduction technique. We pro...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/132347 |
| _version_ | 1811092239595601920 |
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| author | Yang, Yi-Bo Gong, Ming Liang, Jian Lin, Huey-Wen Liu, Keh-Fei Pefkou, Dimitra Shanahan, Phiala |
| author_facet | Yang, Yi-Bo Gong, Ming Liang, Jian Lin, Huey-Wen Liu, Keh-Fei Pefkou, Dimitra Shanahan, Phiala |
| author_sort | Yang, Yi-Bo |
| collection | MIT |
| description | © 2018 authors. Published by the American Physical Society. We present the first nonperturbatively renormalized determination of the glue momentum fraction x g in the nucleon, based on lattice-QCD simulations at the physical pion mass using the cluster-decomposition error reduction technique. We provide the first practical strategy to renormalize the gauge energy-momentum tensor nonperturbatively in the regularization-independent momentum-subtraction (RI/MOM) scheme and convert the results to the MS̄ scheme with one-loop matching. The simulation results show that the cluster-decomposition error reduction technique can reduce the statistical uncertainty of its renormalization constant by a factor of O(300) in calculations using a typical state-of-the-art lattice volume, and the nonperturbatively renormalized x g is shown to be independent of the lattice definitions of the gauge energy-momentum tensor up to discretization errors. We determine the renormalized x gMS̄(2 GeV) to be 0.47(4)(11) at the physical pion mass, which is consistent with the experimentally determined value. |
| first_indexed | 2024-09-23T15:15:17Z |
| format | Article |
| id | mit-1721.1/132347 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:15:17Z |
| publishDate | 2021 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1323472021-09-21T03:13:00Z Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD Yang, Yi-Bo Gong, Ming Liang, Jian Lin, Huey-Wen Liu, Keh-Fei Pefkou, Dimitra Shanahan, Phiala © 2018 authors. Published by the American Physical Society. We present the first nonperturbatively renormalized determination of the glue momentum fraction x g in the nucleon, based on lattice-QCD simulations at the physical pion mass using the cluster-decomposition error reduction technique. We provide the first practical strategy to renormalize the gauge energy-momentum tensor nonperturbatively in the regularization-independent momentum-subtraction (RI/MOM) scheme and convert the results to the MS̄ scheme with one-loop matching. The simulation results show that the cluster-decomposition error reduction technique can reduce the statistical uncertainty of its renormalization constant by a factor of O(300) in calculations using a typical state-of-the-art lattice volume, and the nonperturbatively renormalized x g is shown to be independent of the lattice definitions of the gauge energy-momentum tensor up to discretization errors. We determine the renormalized x gMS̄(2 GeV) to be 0.47(4)(11) at the physical pion mass, which is consistent with the experimentally determined value. 2021-09-20T18:21:56Z 2021-09-20T18:21:56Z 2020-11-06T17:33:39Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/132347 en 10.1103/PHYSREVD.98.074506 Physical Review D Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf American Physical Society (APS) APS |
| spellingShingle | Yang, Yi-Bo Gong, Ming Liang, Jian Lin, Huey-Wen Liu, Keh-Fei Pefkou, Dimitra Shanahan, Phiala Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD |
| title | Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD |
| title_full | Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD |
| title_fullStr | Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD |
| title_full_unstemmed | Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD |
| title_short | Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD |
| title_sort | nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice qcd |
| url | https://hdl.handle.net/1721.1/132347 |
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