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Measurement of HΛ3 production in Pb–Pb collisions at sNN=5.02 TeV

Acharya, S. ; Basu, S. LU orcid ; Christiansen, P. LU ; Hansen, J. LU orcid ; Iversen, K.E. LU orcid ; Matonoha, O. LU ; Nepeivoda, R. LU orcid ; Ohlson, A. LU ; Silvermyr, D. LU orcid and Staa, J. LU , et al. (2025) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 860.
Abstract
The first measurement of HΛ3 and H‾Λ‾3 differential production with respect to transverse momentum and centrality in Pb–Pb collisions at sNN=5.02 TeV is presented. The HΛ3 has been reconstructed via its two-charged-body decay channel, i.e., HΛ3→3He+π−. A Blast-Wave model fit of the pT-differential spectra of all nuclear species measured by the ALICE collaboration suggests that the HΛ3 kinetic freeze-out surface is consistent with that of other nuclei. The ratio between the integrated yields of HΛ3 and He3 is compared to predictions from the statistical hadronisation model and the coalescence model, with the latter being favoured by the presented measurements. © 2024 CERN for the benefit of the ALICE Collaboration
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Contribution to journal
publication status
published
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in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
860
article number
139066
publisher
Elsevier
external identifiers
  • scopus:85212823857
ISSN
0370-2693
DOI
10.1016/j.physletb.2024.139066
language
English
LU publication?
yes
id
162e3c43-00fd-4960-959f-2a751302b6f9
date added to LUP
2025-12-03 11:19:32
date last changed
2025-12-03 11:19:32
@article{162e3c43-00fd-4960-959f-2a751302b6f9,
  abstract     = {{The first measurement of HΛ3 and H‾Λ‾3 differential production with respect to transverse momentum and centrality in Pb–Pb collisions at sNN=5.02 TeV is presented. The HΛ3 has been reconstructed via its two-charged-body decay channel, i.e., HΛ3→3He+π−. A Blast-Wave model fit of the pT-differential spectra of all nuclear species measured by the ALICE collaboration suggests that the HΛ3 kinetic freeze-out surface is consistent with that of other nuclei. The ratio between the integrated yields of HΛ3 and He3 is compared to predictions from the statistical hadronisation model and the coalescence model, with the latter being favoured by the presented measurements. © 2024 CERN for the benefit of the ALICE Collaboration}},
  author       = {{Acharya, S. and Basu, S. and Christiansen, P. and Hansen, J. and Iversen, K.E. and Matonoha, O. and Nepeivoda, R. and Ohlson, A. and Silvermyr, D. and Staa, J. and Zurlo, N.}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Measurement of HΛ3 production in Pb–Pb collisions at sNN=5.02 TeV}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2024.139066}},
  doi          = {{10.1016/j.physletb.2024.139066}},
  volume       = {{860}},
  year         = {{2025}},
}