D meson sensitivity to a system size scan at LHC

Abstract

Experimental measurements in pA collisions indicate no D meson suppression ($R_{\mathrm{pPb}}\sim 1$) but a surprisingly large $v_2$. To better understand these results we propose a system size scan at the LHC involving ${}^{16}$OO, ${}^{40}$ArAr, ${}^{129}$XeXe and ${}^{208}$PbPb collisions. Using Trento+ v-USPhydro+DAB-MOD to make predictions, we find that the $R_{\mathrm{AA}}$ tends towards unity when the system size is decreased, but nonetheless, in the most central collisions $v_2\{2\}$ is almost independent of the colliding system. These results are analyzed in light of path length and initial eccentricity variations.

Comments: 4 pages, proceeding of Strangeness in Quark Matter (SQM 2019)