Abstract
Gauged off-shell Maxwell-Einstein supergravity in six dimensions with N = (1, 0) supersymmetry has a higher derivative extension afforded by a supersymmetrized Riemann squared term. This theory admits a supersymmetric Minkowski ×S 2 compactification with a U(1) monopole of unit charge on S 2. We determine the full spectrum of the theory on this background. We also determine the spectrum on a non-supersymmetric version of this compactification in which the monopole charge is different from unity, and we find the peculiar feature that there are massless gravitini in a representation of the S 2 isometry group determined by the monopole charge.
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