One-loop Parke-Taylor factors for quadratic propagators from massless scattering equations

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Title:	One-loop Parke-Taylor factors for quadratic propagators from massless scattering equations
Authors:	Gomez, Humberto Lopez-Arcos, Cristhiam Talavera, Pedro
Keywords:	Differential and Algebraic Geometry Scattering Amplitudes Superstrings and Heterotic Strings
Issue Date:	1-Oct-2017
Publisher:	Springer Verlag
Abstract:	In this paper we reconsider the Cachazo-He-Yuan construction (CHY) of the so called scattering amplitudes at one-loop, in order to obtain quadratic propagators. In theories with colour ordering the key ingredient is the redefinition of the Parke-Taylor factors. After classifying all the possible one-loop CHY-integrands we conjecture a new one-loop amplitude for the massless Bi-adjoint Φ3 theory. The prescription directly reproduces the quadratic propagators of the traditional Feynman approach. © 2017, The Author(s).
URI:	https://repository.usc.edu.co/handle/20.500.12421/276
ISSN:	11266708
Appears in Collections:	Artículos Científicos

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