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.
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