PoS - Proceedings of Science
Volume 340 - The 39th International Conference on High Energy Physics (ICHEP2018) - Parallel: Strong Interactions and Hadron Physics
Probing charm hadronisation with ALICE at the LHC
C. Bedda*  on behalf of the ALICE collaboration
Full text: pdf
Published on: August 02, 2019
Charm-quark hadronisation can be investigated by measuring the relative abundance of various particle species, in particular non-strange D mesons ($\rm{D^0}$, $\rm{D^+}$, $\rm{D^{*+}}$), $\rm{D_s^+}$ mesons, and charm baryons ($\rm{\Lambda_{c}^+}$, $\rm{\Xi_c^0}$). The high precision tracking, excellent vertexing capabilities and particle identification granted by the ALICE apparatus allows hadrons containing charm quarks to be measured over a wide momentum range in pp and pA collisions. Measurements of the charmed-baryon production in small systems are also a fundamental reference for heavy-ion collisions, where an enhancement of the baryon-to-meson ratio could derive from hadronisation via coalescence of charm quarks with the quarks in the Quark$-$Gluon Plasma.

In this contribution, recent measurements of charmed meson and baryon production in pp collisions and in p--Pb collisions with the ALICE experiment are presented and compared with theoretical calculations. The results include the $p_{\rm T}$-differential cross section of $\rm{\Lambda_{c}^+}$ and $\rm{\Xi_c^0}$ baryons, and the baryon-meson ratio $\rm{\Lambda_{c}^+} / \rm{D^0}$. The measured values of $\rm{\Lambda_{c}^+} / \rm{D^0}$ baryon-meson ratio are significantly higher than expected from model calculations and previous measurements at e$^+$e$^-$ and ep colliders.
DOI: https://doi.org/10.22323/1.340.0311
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.