Parton interpretation and twist-4 parton distributions

doi:10.1016/j.physletb.2021.136472

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Parton interpretation and twist-4 parton distributions
	Ma, J. P.; Pa, Z. Y.; Zhang, G. P.
刊名	PHYSICS LETTERS B
	2021
卷号	820 页码:136472
关键词	POWER CORRECTIONS QCD ANALYSIS FIELD
ISSN号	0370-2693
DOI	10.1016/j.physletb.2021.136472
英文摘要	Through explicit examples we show that twist-4 parton distributions have no parton interpretation in the sense that parton or partons inside a hadron can carry the momentum fraction x of the hadron with x > 1 or x < -1. The studied twist-4 parton distributions of collinear factorization are power-divergent for vertical bar x vertical bar > 1. The corresponding transverse momentum dependent parton distributions have finite contributions for vertical bar x vertical bar > 1 and they have hence no parton interpretation. Parton distributions are defined with products of field operators. In the case of twist-4, different orderings give different results. The differences are determined by commutation relations of field operators. This has been explicitly checked in the studied case. The implications of our results are discussed. (C) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
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/311006/27646]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.[Ma, J. P. 2.Pa, Z. Y.] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China 3.Pa, Z. Y.] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 4.[Ma, J. P.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China 5.[Ma, J. P.] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 6.[Zhang, G. P.] Yunnan Univ, Dept Phys, Kunming 650091, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Ma, J. P.,Pa, Z. Y.,Zhang, G. P.. Parton interpretation and twist-4 parton distributions[J]. PHYSICS LETTERS B,2021,820:136472.
APA	Ma, J. P.,Pa, Z. Y.,&Zhang, G. P..(2021).Parton interpretation and twist-4 parton distributions.PHYSICS LETTERS B,820,136472.
MLA	Ma, J. P.,et al."Parton interpretation and twist-4 parton distributions".PHYSICS LETTERS B 820(2021):136472.