Speaker
Description
The transition from quarks to hadrons is a fundamental process in nature that can be studied at colliders. Heavy quarks (charm and beauty) are mainly produced in hard scattering processes occurring in the early stages of the collisions, and the measurement of production yields of final-state hadrons are a sensitive tool for studying their hadronisation processes. In particular, measurements of open-charm hadron production in pp collisions at the LHC are crucial to study the charm-quark hadronisation in a partonic rich environment, compared to e$^+$e$^-$ or e$^-$p collisions. The measurements of charm-baryon production in pp collisions show a significantly larger baryon-to-meson ratio than in those collision systems, suggesting that the fragmentation function of charm is not universal across the different collision systems.
In this talk, the latest measurements of charm meson (D$^{0}$, D$^+$, D$_{\rm s}^{+}$) and baryon ($\Lambda_{\rm c}^{+}$, $\Xi_{\rm c}^{0,+}$, $\Sigma_{\rm c}^{0,++}$, $\Omega^{0}_{\rm c}$) production at midrapidity in pp collisions at $\sqrt{s}$ = 13 TeV with ALICE will be reported. These measurements allowed us to measure the total charm production cross section at midrapidity and the charm-to-hadron fragmentation fractions in pp collisions. In addition, the published results in pp collisions at $\sqrt{s}$ = 5 TeV will be presented. The recent measurements of non-prompt D mesons and $\Lambda^{+}_{\rm c}$ baryons in the same collision system will be discussed to provide a quantitative comparison between hadronisation properties of beauty and charm hadrons.
Details
Syaefudin Jaelani
National Research and Innovation Agency - BRIN, Indonesia
https://www.brin.go.id/
| Is this abstract from experiment? | Yes |
|---|---|
| Name of experiment and experimental site | ALICE (https://alice-collaboration.web.cern.ch/) |
| Is the speaker for that presentation defined? | Yes |
| Internet talk | Yes |
