Speaker
Description
The study of heavy-flavour particle production as a function of the event activity provides sensitivity to the interplay of hard and soft interaction processes occurring in hadronic collisions, and can shed light into the nucleon underlying partonic structure. Multiple partonic interaction, color-reconnection mechanisms, or modified heavy-quark hadronisation in high-density environments can affect the production of heavy-flavour particles in different event-multiplicity regimes of proton-proton and proton-nucleus collisions.
This contribution summarizes the most recent and relevant multiplicity-dependent measurements of heavy-flavour production in pp and p--Pb collisions performed by the ALICE Collaboration. Among these are the final results of non-prompt D-meson fraction as a function of multiplicity in pp collisions at $\sqrt{s}$ = 13 TeV, the final measurements of self-normalized-yields of heavy-flavour decay electrons in pp collisions at $\sqrt{s}$ = 13 TeV and p--Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16 TeV, as well as the final results on the enhancement of $\Lambda_{\rm c}^+/{\rm D}^{0}$ production yield ratios at various event multiplicities in pp collisions at $\sqrt{s}$ = 13 TeV. The measurement of D meson production as a function of the event spherocity in pp collisions at $\sqrt{s}$ = 13 TeV, probing the dependence of heavy-flavour production on different event topologies, is also reported.
All the presented results are compared to models including different mechanisms that can impact on the multiplicity dependence of heavy-flavour production.
| What kind of work does this abstract pertain to? | Experimental |
|---|---|
| Which experiment is this abstract related to? | ALICE |
