Measurements of azimuthal anisotropy of nonprompt D mesons in PbPb collisions at

Measurements of the elliptic (${v}_{2}$) and triangular (${v}_{3}$) azimuthal anisotropy coefficients are presented for Image 1 mesons produced in Image 2 hadron decays (nonprompt Image 1 mesons) in lead-lead collisions at $\sqrt{{s}_{\mathrm{NN}}}=5.02\phantom{\rule{0.2em}{0ex}}\text{TeV}$. The results are compared with previously published charm meson anisotropies measured using prompt Image 1 mesons. The data were collected with the CMS detector in 2018 with an integrated luminosity of 0.58$\phantom{\rule{0.2em}{0ex}}{\text{nb}}^{-1}$. Azimuthal anisotropy is sensitive to the interactions of quarks with the hot and dense medium created in heavy ion collisions. Comparing results for prompt and nonprompt Image 1 mesons can assist in understanding the mass dependence of these interactions. The nonprompt results show lower magnitudes of ${v}_{2}$ and ${v}_{3}$ and weaker dependences on the meson transverse momentum and collision centrality than those found for prompt Image 1 mesons. The results are in agreement with theoretical predictions that include a mass dependence in the interactions of quarks with the medium.