Blue squares are the observed mean ACF ωobs of the LBGs at z ∼ 4 derived from the Jackknife resampling. The solid line is the best-fitting power-law model on the scale 10|${^{\prime\prime}_{.}}$|0 to 1000|${^{\prime\prime}_{.}}$|0. The red dash–dotted line is the best-fitting dark matter model ωDM (red long-dashed line) in the same scale based on the HALOFIT power spectrum (Smith et al. 2003) following the method in Myers et al. (2007), while the blue dash–dotted line is the best-fitting dark matter model |$\omega _{\rm DM}^{\prime }$| (blue short-dashed line) after considering the contamination of the LBGs. The χ2 fitting results are shown. Top and bottom panels show the logarithmic and the linear scale of the vertical axis, respectively. The top horizontal axis of the top panel is the comoving distance at redshift 4. (Color online)
