Studying Parton Energy Loss in Heavy-Ion Collisions via Direct-Photon and Charged-Particle Azimuthal Correlations

The STAR Collaboration, B. I. Abelev

Charged-particle spectra associated with direct photon (${\gamma }_{dir}$) and ${\pi }^0$ are measured in $p$+$p$ and Au+Au collisions at center-of-mass energy $\sqrt{s_{{}_{NN}}}=200$ GeV with…