Proper identification of the gluon spin
文献类型：期刊论文
| 作者 | Chen, Xiang-Song1,2; Sun, Wei-Min2,3,4; Wang, Fan2,3,4; Goldman, T.5 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2011-05-30 |
| 卷号 | 700期号:1页码:21-24 |
| 关键词 | Gluon spin Spin structure Static term Gauge invariance |
| 英文摘要 | Properties of the recently proposed gauge-invariant gluon spin S(g) are studied and compared to the usually defined "gluon polarization" Delta g. By explicit 1-loop calculations in a quark state. it is found that S(g) = 5/9 Delta g. Furthermore, 4/5 of S(g) can actually be identified as a "static-field" contribution and shown to cancel exactly an analogous static term in the gluon orbital angular momentum L(g), leaving S(g) + L(g) unaltered. These observations suggest that by an alternative definition, the gluon contribution to the nucleon spin may be drastically smaller than in the conventional wisdom. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291578800005 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/15963]  |
| 专题 | 紫金山天文台_星系中的恒星形成研究团组 |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China 3.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China 4.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China 5.Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA |
| 推荐引用方式 GB/T 7714 | Chen, Xiang-Song,Sun, Wei-Min,Wang, Fan,et al. Proper identification of the gluon spin[J]. PHYSICS LETTERS B,2011,700(1):21-24. |
| APA | Chen, Xiang-Song,Sun, Wei-Min,Wang, Fan,&Goldman, T..(2011).Proper identification of the gluon spin.PHYSICS LETTERS B,700(1),21-24. |
| MLA | Chen, Xiang-Song,et al."Proper identification of the gluon spin".PHYSICS LETTERS B 700.1(2011):21-24. |
入库方式： OAI收割
来源：紫金山天文台
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