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HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay

Acharya, S ; Adolfsson, Jonatan LU ; Christiansen, Peter LU ; Matonoha, Oliver LU ; Nassirpour, Adrian LU orcid ; Oskarsson, Anders LU ; Richert, Tuva LU ; Vazquez Rueda, Omar LU ; Silvermyr, David LU orcid and Stenlund, Evert LU , et al. (2019) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 797.
Abstract
An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ=242−38 +34 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle. © 2019 The Author
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Contribution to journal
publication status
published
subject
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
797
article number
134905
publisher
Elsevier
external identifiers
  • scopus:85072029872
ISSN
0370-2693
DOI
10.1016/j.physletb.2019.134905
language
English
LU publication?
yes
id
3e8eb5fe-8f24-4e69-b0d1-96b94648c07f
date added to LUP
2019-09-16 12:58:51
date last changed
2023-04-09 23:16:40
@article{3e8eb5fe-8f24-4e69-b0d1-96b94648c07f,
  abstract     = {{An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ=242−38 +34 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle. © 2019 The Author}},
  author       = {{Acharya, S and Adolfsson, Jonatan and Christiansen, Peter and Matonoha, Oliver and Nassirpour, Adrian and Oskarsson, Anders and Richert, Tuva and Vazquez Rueda, Omar and Silvermyr, David and Stenlund, Evert and Zurlo, N}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2019.134905}},
  doi          = {{10.1016/j.physletb.2019.134905}},
  volume       = {{797}},
  year         = {{2019}},
}