Jet properties from two-particle azimuthal correlations in d+Au collisions at VsNN = 200 GeV at STAR

Abstract

We present measurements of azimuthal correlations between photons (from π0 decay) and charged hadrons in d+Au collisions at VsNN =200 GeV. We use di-hadron correlations to study parton fragmentation in d+Au collisions at RHIC. Specifically, the near-side and away-side peaks of the azimuthal angular difference distribution are used to measure the root-mean-squared (RMS) fragmentation transverse momentum and the mean intrinsic parton transverse momentum . The measurements with leading photons are compared to results using leading charged particles.