Full-color three-loop three-point form factors in N=4 SYM

Understand

We present the detailed computation of full-color three-loop three-point form factors of both the stress-tensor supermultiplet and a length-three BPS operator in N=4 SYM.

• The integrands are constructed based on the color-kinematics (CK) duality and generalized unitarity method.
• An interesting observation is that the CK-dual integrands contain a large number of free parameters.
• We discuss the origin of these free parameters in detail and check that they cancel in the simplified integrands.