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Measuring the system size dependence of the strangeness production with ALICE

Nepeivoda, Roman LU orcid (2025) 21st International Conference on Strangeness in Quark Matter, SQM 2024 In EPJ Web of Conferences 316.
Abstract

The system size dependence of strangeness production in high-energy collisions was studied using Run 2 data from the ALICE experiment at the LHC. The analysis examines the ratios of strange hadron yields to pion yields as a function of mid-rapidity charged particle multiplicity 〉dNch/dη〈|η|<0.5, offering insights into the mechanisms driving strangeness enhancement across different collision systems (pp, p–Pb and Pb–Pb). The yield ratios exhibit a continuous rising trend from low-multiplicity pp collisions at √s = 7 TeV to central Pb–Pb collisions at √sNN = 5.02 TeV. Additionally, the evolution of the mean transverse momentum (〉pT〈) for various strange hadrons... (More)

The system size dependence of strangeness production in high-energy collisions was studied using Run 2 data from the ALICE experiment at the LHC. The analysis examines the ratios of strange hadron yields to pion yields as a function of mid-rapidity charged particle multiplicity 〉dNch/dη〈|η|<0.5, offering insights into the mechanisms driving strangeness enhancement across different collision systems (pp, p–Pb and Pb–Pb). The yield ratios exhibit a continuous rising trend from low-multiplicity pp collisions at √s = 7 TeV to central Pb–Pb collisions at √sNN = 5.02 TeV. Additionally, the evolution of the mean transverse momentum (〉pT〈) for various strange hadrons (KS0, Λ (Λ̄), Ω±, Ξ±) is analyzed, revealing that 〉pT〈 does not connect smoothly between different collision systems, with harder spectra observed in high-multiplicity pp collisions compared to the peripheral Pb–Pb collisions. Finally, performance plots from LHC Run 3 are presented, showcasing the purity of Ξ− and Ω− invariant mass distributions and highlighting the enhanced detector capabilities in Run 3.

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Please use this url to cite or link to this publication:
author
author collaboration
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
The 21st International Conference on Strangeness in Quark Matter (SQM 2024)
series title
EPJ Web of Conferences
volume
316
article number
03007
publisher
EDP Sciences
conference name
21st International Conference on Strangeness in Quark Matter, SQM 2024
conference location
Strasbourg, France
conference dates
2024-06-03 - 2024-06-07
external identifiers
  • scopus:85217821285
ISSN
2101-6275
DOI
10.1051/epjconf/202531603007
language
English
LU publication?
yes
additional info
Publisher Copyright: © The Authors, published by EDP Sciences.
id
af95282c-a38f-400a-866a-2d5cdee3096f
date added to LUP
2025-06-23 12:56:47
date last changed
2025-06-23 12:57:48
@inproceedings{af95282c-a38f-400a-866a-2d5cdee3096f,
  abstract     = {{<p>The system size dependence of strangeness production in high-energy collisions was studied using Run 2 data from the ALICE experiment at the LHC. The analysis examines the ratios of strange hadron yields to pion yields as a function of mid-rapidity charged particle multiplicity 〉dN<sub>ch</sub>/dη〈<sub>|η|</sub>&lt;<sub>0.5</sub>, offering insights into the mechanisms driving strangeness enhancement across different collision systems (pp, p–Pb and Pb–Pb). The yield ratios exhibit a continuous rising trend from low-multiplicity pp collisions at √s = 7 TeV to central Pb–Pb collisions at √s<sub>NN</sub> = 5.02 TeV. Additionally, the evolution of the mean transverse momentum (〉p<sub>T</sub>〈) for various strange hadrons (K<sub>S</sub><sup>0</sup>, Λ (Λ̄), Ω<sup>±</sup>, Ξ<sup>±</sup>) is analyzed, revealing that 〉p<sub>T</sub>〈 does not connect smoothly between different collision systems, with harder spectra observed in high-multiplicity pp collisions compared to the peripheral Pb–Pb collisions. Finally, performance plots from LHC Run 3 are presented, showcasing the purity of Ξ<sup>−</sup> and Ω<sup>−</sup> invariant mass distributions and highlighting the enhanced detector capabilities in Run 3.</p>}},
  author       = {{Nepeivoda, Roman}},
  booktitle    = {{The 21st International Conference on Strangeness in Quark Matter (SQM 2024)}},
  issn         = {{2101-6275}},
  language     = {{eng}},
  month        = {{01}},
  publisher    = {{EDP Sciences}},
  series       = {{EPJ Web of Conferences}},
  title        = {{Measuring the system size dependence of the strangeness production with ALICE}},
  url          = {{http://dx.doi.org/10.1051/epjconf/202531603007}},
  doi          = {{10.1051/epjconf/202531603007}},
  volume       = {{316}},
  year         = {{2025}},
}