Light-cone singularities and transverse-momentum-dependent factorization at twist-3

doi:http://dx.doi.org/10.1016/j.physletb.2017.03.015

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	Light-cone singularities and transverse-momentum-dependent factorization at twist-3
	Ma, JP (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.; Chen, AP; Ma, JP; Ma, JP (reprint author), Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.; Ma, JP (reprint author), Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China.
刊名	PHYSICS LETTERS B
	2017
卷号	768 页码:380-386
DOI	http://dx.doi.org/10.1016/j.physletb.2017.03.015
英文摘要	We study transverse-momentum-dependent factorization at twist-3 for Drell-Yan processes. The factorization can be derived straightforwardly at leading order of alpha(s). But at this order we find that light-cone singularities already exist and effects of soft gluons are not correctly factorized. We regularize the singularities with gauge links off the light-cone and introduce a soft factor to factorize the effects of soft gluons. Interestingly, the soft factor must be included in the definition of subtracted TMD parton distributions to correctly factorize the effects of soft gluons. We derive the Collins-Soper equation for one of twist-3 TMD parton distributions. The equation can be useful for resummation of large logarithms terms appearing in the corresponding structure function in collinear factorization. However, the derived equation is nonhomogeneous. This will make the resummation complicated. (C) 2017 The Authors. Published by Elsevier B.V.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22058]
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 (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.; Ma, JP (reprint author), Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.; Ma, JP (reprint author), Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China.
推荐引用方式 GB/T 7714	Ma, JP ,Chen, AP,Ma, JP,et al. Light-cone singularities and transverse-momentum-dependent factorization at twist-3[J]. PHYSICS LETTERS B,2017,768:380-386.
APA	Ma, JP ,Chen, AP,Ma, JP,Ma, JP ,&Ma, JP .(2017).Light-cone singularities and transverse-momentum-dependent factorization at twist-3.PHYSICS LETTERS B,768,380-386.
MLA	Ma, JP ,et al."Light-cone singularities and transverse-momentum-dependent factorization at twist-3".PHYSICS LETTERS B 768(2017):380-386.