Composing effective prediction at five points

Color-kinematics duality in the adjoint has proven key to relationship between gauge and gravity theory scattering amplitude predictions. In recent work, we demonstrated that at four-point tree-level, a small number of color-dual EFT building blocks could encode all higher-derivative single-trace massless corrections theories compatible with double-copy. One critical aspect was trivialization color-weights -- indeed, it is mixing kinematics non-adjoint-type (like permutation-invariant d^4) which permits description via Here find such ideas clarify predictions local five-point higher-dimensional operators as well. We demonstrate how single scalar block can be combined color structures build factors generate, through double copy, gauge-theory operators. These may then suitably mapped, another double-copy, gravity.