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Soft-gluon-pole contribution in single transverse-spin asymmetries of Drell-Yan processes
Ma, JP; Sang, HZ; Ma, JP (reprint author), Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
2011
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
ISSN1126-6708
期号4页码:62
摘要We use multi-parton states to examine the leading order collinear factorization of single transverse-spin asymmetries in Drell-Yan processes. Twist-3 operators are involved in the factorization. We find that the so-called soft-gluon-pole contribution in the factorization must exist in order to make the factorization correct. This contribution comes from the corresponding cross-section at one-loop, while the hard-pole contribution in the factorization comes from the cross-section at tree-level. Although the two contributions come from results at different orders, their perturbative coefficient functions in the factorization are at the same order. This is in contrast to factorizations only involving twist-2 operators. The soft-gluon-pole contribution found in this work is in agreement with that derived in a different way. For the hard-pole contributions we find an extra contribution from an extra parton process contributing to the asymmetries. We also solve a part of discrepancy in evolutions of the twist-3 operator. The method presented here for analyzing the factorization can be generalized to other processes and can be easily used for studying factorizations at higher orders, because the involved calculations are of standard scattering amplitudes.
部门归属[Ma, J. P.] Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China; [Ma, J. P.] Peking Univ, Ctr High Energy Phys, Beijing 100080, Peoples R China; [Sang, H. Z.] E China Univ Sci & Technol, Sch Sci, Inst Modern Phys, Shanghai 200237, Peoples R China
关键词Deep-inelastic Scattering Final-state Interactions To-back Jets Azimuthal Asymmetries Pion-production Quark Polarization Quantum Chromodynamics Parton Distributions Gauge-invariance Cross-sections
学科领域Physics
资助者National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092]
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收录类别SCI
语种英语
资助者National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092] ; National Nature Science Foundation of P.R. China [10975169, 11021092]
WOS记录号WOS:000290331700062
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被引频次:10[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/311006/14379
专题理论物理所SCI论文
通讯作者Ma, JP (reprint author), Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
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Ma, JP,Sang, HZ,Ma, JP . Soft-gluon-pole contribution in single transverse-spin asymmetries of Drell-Yan processes[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(4):62.
APA Ma, JP,Sang, HZ,&Ma, JP .(2011).Soft-gluon-pole contribution in single transverse-spin asymmetries of Drell-Yan processes.JOURNAL OF HIGH ENERGY PHYSICS(4),62.
MLA Ma, JP,et al."Soft-gluon-pole contribution in single transverse-spin asymmetries of Drell-Yan processes".JOURNAL OF HIGH ENERGY PHYSICS .4(2011):62.
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