“…In above I can be any one of the three operators considered in our current work. Z I (a, ε) is the overall operator renormalization constant, which is unity for I = half-BPS and T operators; however, for I = K , up to three loop, the pertubative coefficients of Z K are available [25,26,27,17,28,7]. F I aa (Q 2 ) is the FF contribution, i.e., the matrix elements of the half-BPS or T or K between the on-shell state aa where a = {λ , g, φ , χ} and vacuum, normalised by the Born contribution, which reads asF…”