Cusped SYM Wilson loop at two loops and beyond

Yuri Makeenko, Poul Olesen, Gordon W. Semenoff

We calculate the anomalous dimension of the cusped Wilson loop in $\mathcal{N}=4$ supersymmetric Yang-Mills theory to order ${\lambda }^2$ ($\lambda =g_{YM}^{2}N$). We show that the cancellation betwee…