Two-loop SL(2) form factors and maximal transcendentality

doi:http://dx.doi.org/10.1007/JHEP12(2016)090

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	Two-loop SL(2) form factors and maximal transcendentality
	Loebbert, F; Sieg, C; Wilhelm, M; Yang, G; Loebbert, F (reprint author), Humboldt Univ, Inst Phys, Grossen Windkanal 6, D-12489 Berlin, Germany.
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2016
期号	12 页码:90
关键词	Scattering Amplitudes Conformal Field Theory Integrable Field Theories Supersymmetric Gauge Theory
DOI	http://dx.doi.org/10.1007/JHEP12(2016)090
英文摘要	Form factors of composite operators in the SL(2) sector of N = 4 SYM theory are studied up to two loops via the on-shell unitarity method. The non-compactness of this subsector implies the novel feature and technical challenge of an unlimited number of loop momenta in the integrand's numerator. At one loop, we derive the full minimal form factor to all orders in the dimensional regularisation parameter. At two loops, we construct the complete integrand for composite operators with an arbitrary number of covariant derivatives, and we obtain the remainder functions as well as the dilatation operator for composite operators with up to three covariant derivatives. The remainder functions reveal curious patterns suggesting a hidden maximal uniform transcendentality for the full form factor. Finally, we speculate about an extension of these patterns to QCD.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21459]
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	Loebbert, F (reprint author), Humboldt Univ, Inst Phys, Grossen Windkanal 6, D-12489 Berlin, Germany.
推荐引用方式 GB/T 7714	Loebbert, F,Sieg, C,Wilhelm, M,et al. Two-loop SL(2) form factors and maximal transcendentality[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(12):90.
APA	Loebbert, F,Sieg, C,Wilhelm, M,Yang, G,&Loebbert, F .(2016).Two-loop SL(2) form factors and maximal transcendentality.JOURNAL OF HIGH ENERGY PHYSICS(12),90.
MLA	Loebbert, F,et al."Two-loop SL(2) form factors and maximal transcendentality".JOURNAL OF HIGH ENERGY PHYSICS .12(2016):90.