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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).
ISSN: 11266708
Appears in Collections:Artículos Científicos

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