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A tree-loop duality relation at two loops and beyond
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DOI：10.1007/JHEP10(2010)073.png)
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摘要
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The duality relation between one-loop integrals and phase-space integrals, developed in a previous work, is extended to higher-order loops. The duality relation is realized by a modification of the customary +i0 prescription of the Feynman propagators, which compensates for the absence of the multiple-cut contributions that appear in the Feynman tree theorem. We rederive the duality theorem at one-loop order in a form that is more suitable for its iterative extension to higher-loop orders. We explicitly show its application to two-and three-loop scalar master integrals, and we discuss the structure of the occurring cuts and the ensuing results in detail.
Keyword:
NLO Computations
QCD
期刊
IF:
5.5
论文数:
3.9W
被引数:
13.7W
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