Labelled tree graphs, Feynman diagrams and disk integrals

Labelled tree graphs, Feynman diagrams and disk integrals

Abstract In this note, we introduce and study a new class of “half integrands” in Cachazo-He-Yuan (CHY) formula, which naturally generalize the so-called Parke-Taylor factors; these are dubbed Cayley functions as each of them corresponds to a labelled tree graph. The CHY formula with a Cayley functi...

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Bibliographic Details
Main Authors: Xiangrui Gao, Song He, Yong Zhang
Format: Article
Language:English
Published: SpringerOpen 2017-11-01
Series:Journal of High Energy Physics
Subjects:
Scattering Amplitudes
Superstrings and Heterotic Strings
Online Access:http://link.springer.com/article/10.1007/JHEP11(2017)144

Internet

http://link.springer.com/article/10.1007/JHEP11(2017)144

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