Speaker
Description
Recent measurements of the production of charm hadrons at midrapidity in pp collisions at $\sqrt s$ = 5.02 and 13 TeV showed that the baryon-to-meson yield ratios are significantly larger than those measured in $\rm e^{+}e^{-}$ collisions for different charm-baryon species. These observations suggest that the charm fragmentation fractions are not universal and that the baryon-to-meson ratios depend on the collision systems.
In this poster, the new measurement of the inclusive $p_{\rm T}$-differential cross section of the charm-strange baryon $\Omega_{\rm c}^{0}$ multiplied by the branching ratio of the $\Omega_{\rm c}^{0} \rightarrow \rm \Omega^{-}\pi^{+}$ decay channel in pp collisions at $\sqrt s$ = 13 TeV will be reported, and compared with theoretical calculations.
However, the lack of absolute measurements of the $\Omega_{\rm c}^{0}$ branching ratios makes it difficult to draw conclusions about the effective $\Omega_{\rm c}^{0}$ enhancement. To address this, a new analysis of the $\Omega_{\rm c}^{0}$ reconstructed from the $\rm e^{+}\Omega^{-}\nu_{e}$ decay channel is being performed, and its status and developments will be also discussed.
| Category | Experiment |
|---|---|
| Collaboration (if applicable) | ALICE Collaboration |
