Electroweak results from the cross-sections and asymmetries with ALEPH at energies from 130 to 189 GeV

The cross sections and forward-backward asymmetries of hadronic and leptonic events produced in e+e- collisions at center-of-mass energies from 130 to 189 GeV are presented. Results for e+e-, μ+μ-, τ+τ-, qq-bar and bb-bar production show no significant deviation from the Standard Model predictions. This enables to put constraints upon physics beyond the Standard Model such as four-fermion contact interactions and R-parity violating squarks and sneutrinos. Limits on the energy scale Λ of eeff contact interactions are typically in range from 6 to 15 TeV. Limits on R-parity violating sneutrinos reach masses of a few hundred GeV/c2 for large values of their Yukawa couplings. (author)