CERN Accelerating science

If you experience any problem watching the video, click the download button below
Download Embed
Preprint
Report number arXiv:2501.12611 ; LHCb-PAPER-2024-038 ; CERN-EP-2024-318 ; LHCB-PAPER-2024-038
Title Measurement of the multiplicity dependence of ΥΥ production ratios in pppp collisions at s=13s=13 TeV
Author(s) LHCb Collaboration  Show all 1151 authors
Corporate author(s) LHCb Collaboration
Publication 2025
Imprint 10 Feb 2025
Number of pages 25
Note Submitted to JHEP
Subject category Particle Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Keywords relativistic heavy ion physics ; heavy quark production
Abstract The Υ(2S)Υ(2S) and Υ(3S)Υ(3S) production cross-sections are measured relative to that of the Υ(1S)Υ(1S) meson, as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy of 1313 TeV. The measurement uses data collected by the LHCb experiment in 2018 corresponding to an integrated luminosity of 2 fb1fb1. Both the Υ(2S)Υ(2S)-to-Υ(1S)Υ(1S) and Υ(3S)Υ(3S)-to-Υ(1S)Υ(1S) cross-section ratios are found to decrease significantly as a function of event multiplicity, with the Υ(3S)Υ(3S)-to-Υ(1S)Υ(1S) ratio showing a steeper decline towards high multiplicity. This hierarchy is qualitatively consistent with the comover model predictions, indicating that final-state interactions play an important role in bottomonia production in high-multiplicity events.
Other source Inspire
Copyright/License Preprint: © 2024-2025 CERN (License: CC-BY-4.0)
Submitted by lhcb.secretariat@cern.ch



 


 Record created 2025-02-10, last modified 2025-02-22


  • Send to ScienceWise.info