Speaker
Description
Recent measurements of charm baryon-to-meson production-yield ratios at the LHC have shown a substantial enhancement of charm-baryon production in pp collisions as compared to electron-positron and electron-proton collisions. This evidence currently could be interpreted as a modification of the charm hadronization mechanism in hadronic collisions, disproving the assumption of universality of charm fragmentation across different collision systems. Charm hadronization can be investigated by measuring charm-baryon production in pp collisions over a wide range of transverse momenta, rapidities, and energies. In addition, by performing the measurements as a function of the multiplicity of the collision, further information, such as the dependence of the hadronization process on the color-charge density, can be assessed. In this poster, we report the result of the analysis of the $\Xi_{\rm c}^{0}$ baryon, reconstructed via the semileptonic decay channel ($\Xi_{\rm c}^{0}\to \Xi^{-}{\rm e}^{+}\nu_{\rm e}$) in pp collisions by using the LHC Run 2 data collected with the ALICE apparatus. The measurements of the baryon-to-meson ($\Xi_{\rm c}^{0}/{\rm D}^{0}$) yield ratio as a function of the event multiplicity and of the $\Xi_{\rm c}^{0}$ branching-fraction ratio between semileptonic and hadronic ($\Xi_{\rm c}^{0}\to \Xi^{-}\pi^{+}$) channels in pp collisions at $\sqrt{s}=13$ TeV will be shown.
| Category | Experiment |
|---|---|
| Collaboration (if applicable) | ALICE |
