Scale-scale correlation as discriminant among the biased galaxy formation models

Using the mock galaxy catalogues created from the N-body simulations, vario us biasing prescriptions for modelling the relative distribution between th e galaxies and the underlying dark matter are statistically tested by using scale-scale correlation. We found that the scale-scale correlation is capa ble of breaking the model degeneracy indicated by the low-order clustering statistics, and could be taken as an effective discriminant among a variety of biasing models. Particularly, comparing with the APM bright galaxy cata logue, we infer that the two parameter Lagrangian biasing model gives the b est fit to the observed clustering features.