Dataset

GSI-2025-00213

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Exploring the non-universality of charm hadronisation through the measurement of the fraction of jet longitudinal momentum carried by $\Lambda_{\rm c}^+$ baryons in pp collisions

ALICE Collaboration (Corresponding author)

2024

Please use a persistent id in citations: doi:10.17182/HEPDATA.151164

Abstract: Recent measurements of charm-baryon production in hadronic collisions have questioned the universality of charm-quark fragmentation across different collision systems. In this work the fragmentation of charm quarks into charm baryons is probed, by presenting the first measurement of the longitudinal jet momentum fraction carried by $\Lambda_{\rm{c}}^{+}$ baryons, $z_{\parallel}$, in hadronic collisions. The results are obtained in proton--proton (pp) collisions at $\sqrt{s}=13$ TeV at the LHC, with $\Lambda_{\rm{c}}^{+}$ baryons and track-based jets reconstructed in the transverse momentum intervals of $3 \leq p_{\rm{T}}^{\Lambda_{\rm{c}}^{+}} < 15$ GeV$/\it{c}$ and $7 \leq p_{\rm{T}}^{\rm{jet,ch}} < 15$ GeV$/\it{c}$, respectively. The $z_{\parallel}$ distribution is compared to a measurement of D$^{0}$-tagged charged jets in pp collisions as well as to PYTHIA 8 simulations. The data hints that the fragmentation of charm quarks into charm baryons is softer with respect to charm mesons, as predicted by hadronisation models which include colour correlations beyond leading-colour in the string formation.

Note: Journal Article GSI record: GSI-2025-00212

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Contributing Institute(s):

1. ALICE (ALI)
2. Detektorlabor (DTL)
3. IT (CIT)
4. ExtreMe Matter Institute, EMMI (EXM)
5. Collaboration CERN: ALICE (ALICE@CERN)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. HGS-HIRe - HGS-HIRe for FAIR (HGS-HIRe) (HGS-HIRe)
3. SUC-GSI-Heidelberg - Strategic university cooperation GSI-U Heidelberg (SUC-GSI-HE) (SUC-GSI-HE)
4. SUC-GSI-Frankfurt - Strategic university cooperation GSI-U Frankfurt/M (SUC-GSI-FR) (SUC-GSI-FR)
5. SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU Darmstadt (SUC-GSI-DA) (SUC-GSI-DA)
6. STRONG-2020 - The strong interaction at the frontier of knowledge: fundamental research and applications (824093) (824093)

Experiment(s):

1. LHC: ALICE

Appears in the scientific report 2024

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Acharya, S. ; Adamova, D. ; Adler, A. ; et al
Measurement of the fraction of jet longitudinal momentum carried by $\Lambda_{\rm c}^+$ baryons in pp collisions
Physical review / D 109(7), 072005 (2024) [10.1103/PhysRevD.109.072005]2024   Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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