ERATO

ERATO [54], like EXCALIBUR, can generate all four-fermion final states through all possible electroweak four-fermion processes. Once again fermions are assumed massless. It contains QED initial-state corrections and the Coulomb correction. It also has radiative corrections related to the width of the unstable ${\rm Z}^{0}$ and ${\rm W}^{\pm}$ bosons.

The main difference from the EXCALIBUR generator is that any of the anomalous couplings seen in the general Lagrangian, equation 3.1, may be varied. These include the CP-violating couplings. All the couplings may be set to any value. It is possible to produce weighted events using ERATO aswell. This means that one set of events can be generated along with many sets of weights, each of which can weight the sample of events to a sample with any anomalous coupling.