Measurement of the production cross section of prompt Ξ0c baryons at midrapidity in pp collisions at √s = 5.02 TeV

Oskari Saarimäki, ALICE Collaboration

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

Abstract

The transverse momentum (p T) differential cross section of the charm-strange baryon Ξc0 is measured at midrapidity (|y| < 0.5) via its semileptonic decay into e +Ξ ν e in pp collisions at s = 5.02 TeV with the ALICE detector at the LHC. The ratio of the p T-differential Ξc0-baryon and D 0-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The p T-integrated cross section of prompt Ξc0-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Ξc0/D 0 = 0.20 ± 0.04 (stat.)−0.07+0.08 (syst.). These results provide an additional indication of a modification of the charm fragmentation from e +e and e p collisions to pp collisions. [Figure not available: see fulltext.]

Original languageEnglish
Article number159
JournalJournal of High Energy Physics
Volume2021
DOIs
Publication statusPublished - Oct 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Heavy Ion Experiments

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