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We present the results of clustering analysis on the $z \sim 2$ star-forminggalaxies. By combining our data with data from publicly available archives, wecollect $g$-, $\zb / z$-, and $K$-band imaging data over 5.2 deg$^{2}$, whichrepresents the largest area BzK/gzK survey. We apply colour corrections totranslate our filter-set to those used in the original BzK selection for thegzK selection. Because of the wide survey area, we obtain a sample of 41,112star-forming gzK galaxies at $z \sim 2$ (sgzKs) down to $\KAB < 23.0$, anddetermine high-quality two-point angular correlation functions (ACFs). Our ACFsshow an apparent excess from power-law behaviour at small angular scale$(\theta \la 0.01^{\circ})$, which corresponds the virial radius of a dark haloat $z \sim 2$ with a mass of $\sim 10^{13} \Msun$. We find that the correlationlengths are consistent with the previous estimates over all magnitude range;however, our results are evaluated with a smaller margin of error than that inprevious studies. The large amount of data enables us to determine ACFsdifferentially depending on the luminosity of the subset of the data. The meanhalo mass of faint sgzKs $(22.0 < K \leq 23.0)$ was found to be $\Mh =(1.32^{+0.09}_{-0.12}) \times 10^{12} h^{-1} \Msun$, whereas bright sgzKs($18.0 \leq K \leq 21.0)$ were found to reside in dark haloes with a mass of$\Mh = (3.26^{+1.23}_{-1.02}) \times 10^{13} h^{-1} \Msun$.

The very wide-field $gzK$ galaxy survey -- I. Details of the clustering properties of star-forming galaxies at $z \sim 2$