Long-range collectivity in small collision-systems with two- and four-particle correlations @ STAR

New STAR differential and integral $v_{2,3}$ measurements that explicitly account for non-flow contributions, are reported for p/d/³He+Au, collisions at $\sqrt{s_{NN}}=200\text{GeV}$. The measurements, which leverage the two-particle correlators for p/d/³He+Au and minimum-bias $p+p$ collisions in tandem with three well established methods of non-flow subtraction, are observed to be method-independent. For comparable multiplicities, they further indicate system-independent $v_2\left\{2\right\}$ and $v_3\left\{2\right\}$ values that are consistent with the critical role of both "size" (N_ch) and the subnucleonic-fluctuations-driven eccentricities ${\epsilon }_{2,3}$, but are inconsistent with the notion of shape engineering in p/d/³He+Au collisions. The scaling function derived from the measurements, confirm the important role of final-state effects across a broad spectrum of collision-system sizes and energies, and suggests an increase in $\eta /s(T,{\mu }_B)$ for small collision-systems.