“…In our previous measurements and most RHIC A + A results, the subtracted flow modulations of the underlying event were limited to contributions of v 2 and the fourth-order harmonic component with respect to the second-order event plane v 4 { 2 } [15,16,20,23,28,[44][45][46][47][48]. Only the recent STAR measurement [49] took into account contributions from v 3 and the fourth-order harmonic component uncorrelated to the second-order event-plane in addition to v 4 { 2 }. At low-to-intermediate p T in two-particle correlations, intricate features appear such as the near-side long-range rapidity correlations called the "ridge" [45,50] and the away-side "double-humped" structures [28,44,[46][47][48][49]51,52].…”