Partonic state and single transverse spin asymmetry in Drell-Yan process
文献类型：期刊论文
| 作者 | Ma, J. P. ; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China; Sang, H. Z.
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| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
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| 出版日期 | 2008 |
| 期号 | 11页码:- |
| 关键词 | Deep-inelastic Scattering Semiinclusive Pion Electroproduction Polarized Deuterium Target To-back Jets Azimuthal Asymmetries Quark Polarization Cross-sections Fragmentation Function Hard Scattering Sivers Function |
| ISSN号 | 1126-6708 |
| 英文摘要 | Single transverse-spin asymmetries have been studied intensively both in experiment and theory. Theoretically, two factorization approaches have been proposed. One is by using transverse-momentum-dependent factorization and the asymmetry comes from the so called Sivers function. Another is by using collinear factorization where the non- perturbative effect is parameterized by a twist-3 hadronic matrix element. However, the factorized formulas for the asymmetries in the two approaches are derived at hadron level formally by diagram expansion, where one works with various part on density matrices of hadrons. If the two factorizations hold, they should also hold at parton level. We examine this for Drell-Yan processes by replacing hadrons with partons. By calculating the asymmetry, Sivers function and the twist-3 matrix element at nontrivial leading order of alpha(s), we find that we can reproduce the result of the transverse-momentum-dependent factorization. But we can only verify the result of the collinear factorization partly. Two formally derived relations between Sivers function and the twist-3 matrix element are also examined with negative results. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000261315100090 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5446]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, J. P.,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China,Sang, H. Z.. Partonic state and single transverse spin asymmetry in Drell-Yan process[J]. JOURNAL OF HIGH ENERGY PHYSICS,2008(11):-. |
| APA | Ma, J. P.,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China,&Sang, H. Z..(2008).Partonic state and single transverse spin asymmetry in Drell-Yan process.JOURNAL OF HIGH ENERGY PHYSICS(11),-. |
| MLA | Ma, J. P.,et al."Partonic state and single transverse spin asymmetry in Drell-Yan process".JOURNAL OF HIGH ENERGY PHYSICS .11(2008):-. |
入库方式： OAI收割
来源：理论物理研究所
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