Measurements of heavy-flavor production as a function of multiplicity with ALICE at the LHC

Abstract

In this contribution, the production of heavy-flavor hadrons as a function of multiplicity, via the study of the D-meson and heavy-flavor hadron decay leptons self-normalized yields in pp collisions at the center of mass energy $\sqrt{s}=13$ TeV is discussed. Comparisons are made with similar measurements of J/$\psi$ at $\sqrt{s}=13$ TeV and various model calculations. The ${\mathrm{\Lambda }}_{\mathrm{c}}^{+}/{\mathrm{D}}^0$ and ${\mathrm{D}}_{\mathrm{s}}^{+}/{\mathrm{D}}^0$ yield ratios in different multiplicity intervals in pp collisions at $\sqrt{s}=13$ TeV are also reported. In addition, the ALICE measurement of ${\mathrm{\Lambda }}_{\mathrm{c}}^{+}$ production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV down to transverse momentum ($p_{\mathrm{T}}$) = 0 GeV/$c$ is presented. Finally, the nuclear modification factor is shown for open charm hadrons at $\sqrt{s}=5.02$ TeV in p-Pb collisions. Finally, measurements of the elliptic flow of heavy-flavor hadron decay leptons in p-Pb systems are presented, which hint towards a possible collective behaviour in high multiplicity p-Pb collisions.

arXiv comment6 pages, 10 figures, 50th International Symposium on Multiparticle Dynamics (ISMD2021) 12-16 July 2021