アブストラクト：
Previous studies find that Lyα emitters (LAEs) at z~2 have halo masses of 10^11-10^12 Msun (b=1.8±0.3) and stellar masses of ~10^8-10^9 Msun (Guaita et al. 2010; 2011). It implies that their stellar-to-halo mass ratio (SHMR) is slightly larger than that of an extrapolation of the average relation (Behroozi et al. 2013). One of challenges is to reduce uncertainties of the SHMR which arise from their deficient sample size ~250 and small survey area ~0.3 deg^2. In this work, we obtain ~2400 LAEs at z~2 in four survey fields (SXDS, COSMOS, GOODS-S and GOODS-N) over 1 deg^2 (Nakajima et al. 2012). Their average dark matter halo mass and stellar mass are estimated to be ~10^10-10^11 Msun (b=1.24^+0.15_-1.7) and ~10^9 Msun derived from clustering analysis and SED fitting, respectively. Our LAEs lie slightly above an extrapolation of the average SHMR relation and have slightly high baryon (i.e., gas) conversion efficiencies, though they are SFMS galaxies. We will discuss physical origin of these LAEs.