Abstract
We propose that certain twists of the
su
(
2
|
2
)
S-matrix elements describe the
β-deformation of
N
=
4
supersymmetric Yang–Mills theory. We compute the perturbative four-loop anomalous dimension of the Konishi operator of the deformed gauge theory from the Lüscher formula based on these twisted
S-matrix elements. The result agrees exactly with the perturbative gauge theory computations.
