One-loop Parke-Taylor factors for quadratic propagators from massless scattering equations
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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.
Originalsprog | Engelsk |
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Artikelnummer | 175 |
Tidsskrift | Journal of High Energy Physics |
Vol/bind | 2017 |
Udgave nummer | 10 |
ISSN | 1126-6708 |
DOI | |
Status | Udgivet - 2017 |
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