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Chen, XS; Sun, WM; Wang, F; Goldman, T; Chen, XS (reprint author), Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China.
Proper identification of the gluon spin
发表期刊PHYSICS LETTERS B
语种英语
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.
2011
ISSN0370-2693
卷号700期号:1页码:21-24
学科领域Physics
收录类别SCI
项目资助者China NSF [10875082, 11035003]; US DOE [DE-AC52-06NA25396]; China Education Department ; China NSF [10875082, 11035003]; US DOE [DE-AC52-06NA25396]; China Education Department ; China NSF [10875082, 11035003]; US DOE [DE-AC52-06NA25396]; China Education Department ; China NSF [10875082, 11035003]; US DOE [DE-AC52-06NA25396]; China Education Department
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14346
专题理论物理所科研产出_SCI论文
通讯作者Chen, XS (reprint author), Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China.
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GB/T 7714
Chen, XS,Sun, WM,Wang, F,et al. Proper identification of the gluon spin[J]. PHYSICS LETTERS B,2011,700(1):21-24.
APA Chen, XS,Sun, WM,Wang, F,Goldman, T,&Chen, XS .(2011).Proper identification of the gluon spin.PHYSICS LETTERS B,700(1),21-24.
MLA Chen, XS,et al."Proper identification of the gluon spin".PHYSICS LETTERS B 700.1(2011):21-24.
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