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We study the cusp anomalous dimension in N=6 ABJ(M) theory, identifying ascaling limit in which the ladder diagrams dominate. The resummation is encodedinto a Bethe-Salpeter equation that is mapped to a Schroedinger problem,exactly solvable due to the surprising supersymmetry of the effectiveHamiltonian. In the ABJ case the solution implies the diagonalization of theU(N) and U(M) building blocks, suggesting the existence of two independent cuspanomalous dimensions and an unexpected exponentiation structure for the relatedWilson loops. While consistent with previous perturbative analysis, the strongcoupling limit of our result does not agree with the string theory computation,emphasizing a difference with the analogous resummation in the N=4 case.

Surprises from the resummation of ladders in the ABJ(M) cusp anomalous dimension