the effect is also present with an even higher difference and statistical significance between the structure in the direction of the angular momentum and perpendicular to it (Right panels of Figure \[fig:3D\]). In this case, neighbors in the direction perpendicular to the angular momentum show more correlation, and there is a clear tendency for this alignment to decrease with separation, which goes from almost a $50\%$ effect on relative amplitudes (lower panel) at small separations to about $<5\%$ at large separations. Note that the alignment does not change at large separations as seemed to be the case for low mass haloes, even at $R=20$h$^{-1}$Mpc compared to $R=5$h$^{-1}$Mpc analised in the low mass halo sample.

Notice that the halo-particle cross-correlation functions in Figure \[fig:3D\] show the characteristic 1- and 2-halo terms reported in several previous measurements of both observational (e.g. Zehavi et al., 2004, Cooray, 2005) and numerical simulations (Zheng et al., 2004); these two regimes are separated in the figure by the vertical dashed lines. This separation is obtained by measuring the scale at which the correlation function is seen to shift between these two regimes (there is a local minimum in the first derivative of the correlation function). It 