Tauberian theorems for vector-valued Fourier and Laplace transforms

Let X be a Banach space and f is an element of L-loc(1)(R; X) be absolutely regular (i.e. integrable when divided by some polynomial). If the distributional Fourier transform of f is locally integrable then f converges to 0 at infinity in some sense to be made precise. From this result we deduce some Tauberian theorems for Fourier and Laplace transforms, which can be improved if the underlying Banach space has the analytic Radon-Nikodym property.