Orientifold daughter of N=4 SYM theory and double-trace running

We study the orientifold daughter of N = 4 super-Yang-Mills as a candidate nonsupersymmetric large-N conformal field theory. In a theory with vanishing single-trace beta functions that contains scalars in the adjoint representation, conformal invariance might still be broken by renormalization of double-trace terms to leading order at large N. In this note we perform a diagrammatic analysis and argue that the orientifold daughter does not suffer from double-trace running. This implies an exact large-N equivalence between this theory and a subsector of N = 4 super-Yang-Mills.