Measurements of the elliptic and triangular azimuthal anisotropies in central ${}^3$He+Au, $d$+Au and $p$+Au collisions at \mbox{\sqrt{s_{$\mathrm{N}\mathrm{N}$}}} = 200 GeV

The elliptic ($v_2$) and triangular ($v_3$) azimuthal anisotropy coefficients in central ${}^3$He+Au, $d$+Au, and $p$+Au collisions at \mbox{\sqrt{s_{$\mathrm{N}\mathrm{N}$}}} = 200 GeV are measured as a function of transverse momentum ($p_{\mathrm{T}}$) at mid-rapidity ($\mathrm{\mid }\eta \mathrm{\mid }<$0.9), via the azimuthal angular correlation between two particles both at $\mathrm{\mid }\eta \mathrm{\mid }<$0.9. While the $v_2(p_{\mathrm{T}})$ values depend on the colliding systems, the $v_3(p_{\mathrm{T}})$ values are system-independent within the uncertainties, suggesting an influence on eccentricity from sub-nucleonic fluctuations in these small-sized systems. These results also provide stringent constraints for the hydrodynamic modeling of these systems.