Proton Isovector Helicity Distribution on the Lattice at Physical Pion Mass
文献类型：期刊论文
| 作者 | Lin, HW; Chen, JW; Ji, XD; Jin, LC; Li, RZ; Liu, YS; Yang, YB ; Zhang, JH; Zhao, Y4
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| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2018 |
| 卷号 | 121期号:24页码:242003 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.121.242003 |
| 英文摘要 | We present a state-of-the-art calculation of the isovector quark-helicity Bjorken-x distribution in the proton using lattice-QCD ensembles at the physical pion mass. We compute quasidistributions at proton momenta P-z is an element of {2.2, 2.6, 3.0} GeV on the lattice and match them systematically to the physical parton distribution using the large-momentum effective theory. We reach an unprecedented precision through high statistics in simulations, large-momentum proton matrix elements, and control of excited-state contamination. The resulting distribution with combined statistical and systematic errors is in agreement with the latest phenomenological analysis of the spin-dependent experimental data, in particular, Delta(u) over bar (x) > Delta(d) over bar (x). |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23526]  |
| 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.Natl Taiwan Univ, Dept Phys, Ctr Theoret Phys, Taipei 106, Taiwan 2.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA 3.Michigan State Univ, Dept Computat Math, E Lansing, MI 48824 USA 4.Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 106, Taiwan 5.MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA 6.Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China 7.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China 8.Univ Maryland, Maryland Ctr Fundamental Phys, Dept Phys, College Pk, MD 20742 USA 9.Univ Connecticut, Dept Phys, Storrs, CT 06269 USA 10.Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA |
| 推荐引用方式 GB/T 7714 | Lin, HW,Chen, JW,Ji, XD,et al. Proton Isovector Helicity Distribution on the Lattice at Physical Pion Mass[J]. PHYSICAL REVIEW LETTERS,2018,121(24):242003. |
| APA | Lin, HW.,Chen, JW.,Ji, XD.,Jin, LC.,Li, RZ.,...&Zhao, Y.(2018).Proton Isovector Helicity Distribution on the Lattice at Physical Pion Mass.PHYSICAL REVIEW LETTERS,121(24),242003. |
| MLA | Lin, HW,et al."Proton Isovector Helicity Distribution on the Lattice at Physical Pion Mass".PHYSICAL REVIEW LETTERS 121.24(2018):242003. |
入库方式： OAI收割
来源：理论物理研究所
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