Knowledge Management System of Institute of Theoretical Physics, CAS
Liang, Jian; Sun, Mingyang; Yang, Yi-Bo ; Draper, Terrence; Liu, Keh-Fei
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| Ratio of strange to u/d momentum fraction in disconnected insertions | |
| Source Publication | PHYSICAL REVIEW D
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| Language | 英语 |
| Keyword | LATTICE QUARKS |
| Abstract | 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. |
| 2020 | |
| ISSN | 1550-7998 |
| Volume | 102Issue:3Pages:34514 |
| Cooperation Status | 国际 |
| Subject Area | Astronomy & Astrophysics ; Physics |
| MOST Discipline Catalogue | Astronomy & Astrophysics ; Physics, Particles & Fields |
| DOI | 10.1103/PhysRevD.102.034514 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/27457 |
| Collection | SCI期刊论文 |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Ratio of strange to （1144KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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