Radiative corrections to the electron-graviton vertex

In an earlier publication we set down the lowest-order electromagnetic corrections to the photon-graviton vertex. Owing to a cancellation between wave-function and vertex renormalizations, they were perfectly finite and unambiguous, though unfortunately not directly susceptible to experimental test. In this note we would like to pursue the same problem for the electron-graviton vertex following the same field-theoretic procedure, in contrast to the dispersive approach taken by Pagels.