Manifesting Color-Kinematics Duality in the Scattering Equation   Formalism
  We prove that the scattering equation formalism for Yang-Mills amplitudes can be used to make manifest the theory's color-kinematics duality. This is achieved through a concrete reduction algorithm which renders this duality manifest term-by-term. The reduction follows from the recently derived set of identities for amplitudes expressed in the scattering equation formalism that are analogous to monodromy relations in string theory. A byproduct of our algorithm is a generalization of the identities among gravity and Yang-Mills amplitudes. 
N. E. J. Bjerrum-Bohr, Jacob L. Bourjaily, Poul H. Damgaard, Bo Feng
hep-th