  We investigate the TeV-scale stringy signals of the four-fermion scattering
at the electron-positron collider with the center of mass energy 500-1000 GeV.
The nature of the stringy couplings leads to distinguishable asymmetries
comparing to the other new physics models. Specifically, the stringy states in
the four-fermion scattering at the leading-order corrections are of spin-1 and
2 with the chiral couplings inherited from the gauge bosons identified as the
zeroth-mode string states. The angular left-right, forward-backward,
center-edge asymmetries and the corresponding polarized-beam asymmetries are
investigated. The low-energy stringy corrections are compared to the ones
induced by the Kaluza-Klein (KK) gravitons. The angular left-right asymmetry of
the scattering with the final states of u and d-type quarks, namely c and b,
shows significant deviations from the Standard Model values. The center-edge
and forward-backward asymmetries for all final-states fermions also show
significant deviations from the corresponding Standard Model values. The
differences between the signatures induced by the stringy corrections and the
KK gravitons are appreciable in both angular left-right and forward-backward
asymmetries.
