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arXiv · 1508.06027

One-loop Scattering Equations and Amplitudes from Forward Limit

Song He·Ellis Ye Yuan
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Abstract

We show that the forward limit of tree-level scattering equations with two massive particles yields the SL(2,C)-covariant form of the one-loop scattering equations recently proposed by Geyer et al. We clarify several properties about these equations and the formulas at one loop. We then argue that in the bi-adjoint scalar theory, such forward limit yields the correct one-loop massless amplitudes, which leads to a new formula for the latter.

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Song He, Ellis Ye Yuan. 2015-08-25. One-loop Scattering Equations and Amplitudes from Forward Limit. https://doi.org/10.1103/physrevd.92.105004

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