  We study the four-dimensional N=2 superconformal field theories that describe
D3-branes probing the recently constructed N=2 S-folds in F-theory. We
introduce a novel, infinite class of superconformal field theories related to
S-fold theories via partial Higgsing. We determine several properties of both
the S-fold models and this new class of theories, including their central
charges, Coulomb branch spectrum, and moduli spaces of vacua, by bringing to
bear an array of field-theoretical techniques, to wit, torus-compactifications
of six-dimensional N=(1,0) theories, class S technology, and the SCFT/VOA
correspondence.

High Energy Physics - Theory