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One-loop amplitudes in Einstein-Yang-Mills from forward limits
A bstract We present a method to compute the integrands of one-loop Einstein-Yang-Mills amplitudes for any number of external gauge and gravity multiplets. Our construction relies on the double-copy structure of Einstein-Yang-Mills as (super-)Yang-Mills with the so-called YM+ ϕ 3 theory — pure Yang-Mills coupled to bi-adjoint scalars — which …