M-theory on the Stiefel manifold and 3d conformal field theories

We compute the mass and multiplet spectrum of M-theory compactified on the product of AdS(4) spacetime by the Stiefel manifold V-(5,V-2) = SO(5) / SO( 3), and we use this information to deduce via the AdS/CFT map the primary o perator content of the boundary N = 2 conformal field theory. We make an at tempt for a candidate supersymmetric gauge theory that, at strong coupling, should be related to parallel M2-branes on the singular point of the non-c ompact Calabi-Yau four-fold Sigma(a=1)(5) z(a)(2) = 0, describing the cone on V-(5,V-2).