Mc. Gonzalez-garcia et al., Constraints on four-fermion contact interactions from precise electroweak measurements, J PHYS G-NU, 24(12), 1998, pp. 2213-2221
We establish constraints on a general four-fermion contact interaction from
precise measurements of electroweak parameters. We compute the one-loop co
ntribution for the leptonic Z width, anomalous magnetic, weak-magnetic, ele
ctric and weak dipole moments of leptons in order to extract bounds on the
energy scale of these effective interactions.