A1 Journal article (refereed)
Measurement of the fraction of jet longitudinal momentum carried by Λc+ baryons in pp collisions (2024)
ALICE Collaboration. (2024). Measurement of the fraction of jet longitudinal momentum carried by Λc+ baryons in pp collisions. Physical Review D, 109(7), Article 072005. https://doi.org/10.1103/PhysRevD.109.072005
JYU authors or editors
Publication details
All authors or editors: ALICE Collaboration
Journal or series: Physical Review D
ISSN: 2470-0010
eISSN: 2470-0029
Publication year: 2024
Publication date: 05/04/2024
Volume: 109
Issue number: 7
Article number: 072005
Publisher: American Physical Society (APS)
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/PhysRevD.109.072005
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/94618
Publication is parallel published: https://arxiv.org/abs/2301.13798
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 Λc+ baryons, zch||, in hadronic collisions. The results are obtained in proton-proton (pp) collisions at √s=13 TeV at the LHC, with Λc+ baryons and charged (track-based) jets reconstructed in the transverse momentum intervals of 3≤pΛ+cT<15 GeV/c and 7≤pjetchT<15 GeV/c, respectively. The zch|| distribution is compared to a measurement of D0-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, in the measured kinematic interval, as predicted by hadronisation models which include colour correlations beyond leading-colour in the string formation.
Keywords: particle physics
Contributing organizations
Related projects
- The strong interaction at the frontier of knowledge: fundamental research and applications- STRONG -2020
- Lappi, Tuomas
- European Commission
- Center of Excellence in Quark Matter
- Räsänen, Sami
- Research Council of Finland
- Center of Excellence in Quark Matter
- Kim, Dong
- Research Council of Finland
Ministry reporting: Yes
VIRTA submission year: 2024
Preliminary JUFO rating: 2