Measurement of the production cross section of prompt Ξc0 baryons at midrapidity in pp collisions at √s=5.02 TeV



Acharya, S, Adamova, D, Adler, A, Adolfsson, J, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU
et al (show 1019 more authors) (2021) Measurement of the production cross section of prompt Ξc0 baryons at midrapidity in pp collisions at √s=5.02 TeV JOURNAL OF HIGH ENERGY PHYSICS, 2021 (10). 159-. ISSN 1029-8479, 1029-8479

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Abstract

The transverse momentum (p<inf>T</inf>) differential cross section of the charm-strange baryon Ξc0 is measured at midrapidity (|y| < 0.5) via its semileptonic decay into e<sup>+</sup>Ξ<sup>−</sup>ν<inf>e</inf> in pp collisions at s = 5.02 TeV with the ALICE detector at the LHC. The ratio of the p<inf>T</inf>-differential Ξc0-baryon and D<sup>0</sup>-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<inf>T</inf>-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<sup>0</sup> = 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<sup>+</sup>e<sup>−</sup> and e<sup>−</sup>p collisions to pp collisions. [Figure not available: see fulltext.]

Item Type: Article
Uncontrolled Keywords: Heavy Ion Experiments
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 16 May 2022 13:49
Last Modified: 16 Jun 2026 14:01
DOI: 10.1007/JHEP10(2021)159
Open Access URL: https://link.springer.com/article/10.1007/JHEP10(2...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3154878
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