Measuring weak lensing masses on individual clusters
  We present weak lensing mass estimates for a sample of 458 galaxy clusters
from the redMaPPer Sloan Digital Sky Survey DR8 catalogue using Hyper
Suprime-Cam weak lensing data. We develop a method to quickly estimate cluster
masses from weak lensing shear and use this method to estimate weak lensing
masses for each of the galaxy clusters in our sample. Subsequently, we
constrain the mass-richness relation as well as the intrinsic scatter between
the cluster richness and the measured weak lensing masses. When calculating the
mass-richness relation for all clusters with a richness $\lambda>20$, we find a
tension in the slope of the mass-richness relation with the Dark Energy Survey
Year 1 stacked weak lensing analysis. For a reduced sample of clusters with a
richness $\lambda>40$, our results are consistent with the Dark Energy Survey
Year 1 analysis.
