No abstract

No abstract

We present high-fidelity cosmology results from a blinded joint analysis of galaxy-galaxy weak lensing (∆Σ) and projected galaxy clustering (wp) measured from the Hyper Suprime-Cam Year-1 (HSC-Y1) data and spectroscopic Sloan Digital Sky Survey (SDSS) galaxy catalogs in the redshift range 0.15 < z < 0.7. We define luminosity-limited samples of SDSS galaxies to serve as the tracers of wp in three spectroscopic redshift bins, and as the lens samples for ∆Σ. For the ∆Σ measurements, we select a single sample of 4 million source galaxies over 140 deg 2 from HSC-Y1 with photometric redshifts (photo-z) greater than 0.75, enabling a better handle of photo-z errors by comparing the ∆Σ amplitudes for the three lens redshift bins. The deep, high-quality HSC-Y1 data enable significant detections of the ∆Σ signals, with integrated signal-to-noise ratio S/N ∼ 15 in the range 3 ≤ R/[h −1 Mpc] ≤ 30 for the three lens samples, despite the small area coverage. For cosmological parameter inference, we use an input galaxy-halo connection model built on the Dark