A1 Journal article (refereed)
Light (anti)nuclei production in Pb-Pb collisions at √sNN = 5.02 TeV (2023)

ALICE Collaboration. (2023). Light (anti)nuclei production in Pb-Pb collisions at √sNN = 5.02 TeV. Physical Review C, 107, Article 064904. https://doi.org/10.1103/PhysRevC.107.064904

JYU authors or editors

Publication details

All authors or editors: ALICE Collaboration

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2023

Publication date: 08/06/2023

Volume: 107

Article number: 064904

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.107.064904

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/88619

Publication is parallel published: https://arxiv.org/abs/2211.14015

Abstract

The measurement of the production of deuterons, tritons and 3He and their antiparticles in Pb-Pb collisions at √sNN = 5.02TeV is presented in this article. The measurements are carried out at midrapidity (|y|< 0.5) as a function of collision centrality using the ALICE detector. The pT-integrated yields, the coalescence parameters and the ratios to protons and antiprotons are reported and compared with nucleosynthesis models. The comparison of these results in different collision systems at different center-of-mass collision energies reveals a suppression of nucleus production in small systems. In the Statistical Hadronisation Model framework, this can be explained by a small correlation volume where the baryon number is conserved, as already shown in previous fluctuation analyses. However, a different size of the correlation volume is required to describe the proton yields in the same data sets. The coalescence model can describe this suppression by the fact that the wave functions of the nuclei are large and the fireball size starts to become comparable and even much smaller than the actual nucleus at low multiplicities.

Keywords: nuclear physics

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Ministry reporting: Yes

Reporting Year: 2023

JUFO rating: 2