Ratio of strange to u/d momentum fraction in disconnected insertions
文献类型：期刊论文
| 作者 | Liang, Jian; Sun, Mingyang; Yang, Yi-Bo ; Draper, Terrence; Liu, Keh-Fei
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2020 |
| 卷号 | 102期号:3页码:34514 |
| ISSN号 | 1550-7998 |
| 关键词 | LATTICE QUARKS |
| DOI | 10.1103/PhysRevD.102.034514 |
| 英文摘要 | The ratio of the strange quark momentum fraction < x >(s+(s) over bar) to that of light quark u or d in disconnected insertions (DI) is calculated on the lattice with overlap fermions on four domain wall fermion ensembles. These ensembles cover three lattice spacings, three volumes and several pion masses including the physical one, from which a global fitting is carried out. A complete nonperturbative renormalization and the mixing between the quark and glue operators are taken into account. We fmd the ratio to be < x > s+(s) over bar/< x > u+(u) over bar (DI) = 0.795(79)(77) at mu = 2 GeV in the (MS) over bar scheme. This ratio can be used as a constraint to better determine the strange parton distribution especially in the small x region in the global fittings of PDFs when the connected and disconnected sea are fitted and evolved separately, demonstrating a new way that connects lattice calculations with global analyses. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27457]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.[Liang, Jian 2.Sun, Mingyang 3.Draper, Terrence 4.Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Jian,Sun, Mingyang,Yang, Yi-Bo,et al. Ratio of strange to u/d momentum fraction in disconnected insertions[J]. PHYSICAL REVIEW D,2020,102(3):34514. |
| APA | Liang, Jian,Sun, Mingyang,Yang, Yi-Bo,Draper, Terrence,&Liu, Keh-Fei.(2020).Ratio of strange to u/d momentum fraction in disconnected insertions.PHYSICAL REVIEW D,102(3),34514. |
| MLA | Liang, Jian,et al."Ratio of strange to u/d momentum fraction in disconnected insertions".PHYSICAL REVIEW D 102.3(2020):34514. |
入库方式： OAI收割
来源：理论物理研究所
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