  Electron transport through a spin-orbit-coupled quantum ring is investigated
within linear response theory. We show that the finite width of the ring
results in the appearance of Fano resonances in the conductance. This turns out
to be a consequence of the spin-orbit interaction that leads to a breaking of
the parity of the states localized in the ring. The resonances appear when the
system is close to maxima of Aharonov-Casher conductance oscillations where
spin transfer is heavily modified. When the spin-orbit coupling strength is
detuned from the Aharonov-Casher maxima the resonances are broadened resulting
in a dependence of the spin transport on the electron Fermi energy in contrast
to predictions from one-dimensional models
