Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD
文献类型：期刊论文
| 作者 | XQCD Collaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2018 |
| 卷号 | 98期号:7页码:74506 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.98.074506 |
| 文献子类 | Article |
| 英文摘要 | 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 (R1/MOM) scheme and convert the results to the (MS) over bar 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 >((MS) over bar)(g) (2 GeV) to be 0.47(4)(11) at the physical pion mass, which is consistent with the experimentally determined value. |
| 电子版国际标准刊号 | 2470-0029 |
| WOS关键词 | OPERATORS ; NUCLEON |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000447187400004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286412]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | XQCD Collaboration. Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD[J]. PHYSICAL REVIEW D,2018,98(7):74506. |
| APA | XQCD Collaboration.(2018).Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD.PHYSICAL REVIEW D,98(7),74506. |
| MLA | XQCD Collaboration."Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD".PHYSICAL REVIEW D 98.7(2018):74506. |
入库方式： OAI收割
来源：高能物理研究所
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