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Measurement of the Lifetime and Λ Separation Energy of HΛ3

Acharya, S. ; Basu, S. LU orcid ; Christiansen, P. LU ; Matonoha, O. LU ; Nassirpour, A.F. LU orcid ; Ohlson, A. LU ; Oskarsson, A. LU ; Richert, T. LU ; Rueda, O.V. LU and Silvermyr, D. LU orcid , et al. (2023) In Physical Review Letters 131(10).
Abstract
The most precise measurements to date of the HΛ3 lifetime τ and Λ separation energy BΛ are obtained using the data sample of Pb-Pb collisions at sNN=5.02 TeV collected by ALICE at the LHC. The HΛ3 is reconstructed via its charged two-body mesonic decay channel (HΛ3→He3+π- and the charge-conjugate process). The measured values τ=[253±11(stat)±6(syst)] ps and BΛ=[102±63(stat)±67(syst)] keV are compatible with predictions from effective field theories and confirm that the HΛ3 structure is consistent with a weakly bound system. © 2023 CERN.
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Contribution to journal
publication status
published
subject
keywords
Binary alloys, Nitrogen compounds, Charge conjugate, Data sample, Decay channels, Effective field theory, Measured values, Measurements of, Pb-Pb collisions, Precise measurements, Separation energy, Tellurium compounds
in
Physical Review Letters
volume
131
issue
10
article number
102302
publisher
American Physical Society
external identifiers
  • scopus:85172215558
  • pmid:37739380
ISSN
0031-9007
DOI
10.1103/PhysRevLett.131.102302
language
English
LU publication?
yes
id
3d81191e-c2d1-477e-b291-9d039740a7e3
date added to LUP
2024-01-15 14:30:39
date last changed
2024-01-16 03:11:44
@article{3d81191e-c2d1-477e-b291-9d039740a7e3,
  abstract     = {{The most precise measurements to date of the HΛ3 lifetime τ and Λ separation energy BΛ are obtained using the data sample of Pb-Pb collisions at sNN=5.02 TeV collected by ALICE at the LHC. The HΛ3 is reconstructed via its charged two-body mesonic decay channel (HΛ3→He3+π- and the charge-conjugate process). The measured values τ=[253±11(stat)±6(syst)] ps and BΛ=[102±63(stat)±67(syst)] keV are compatible with predictions from effective field theories and confirm that the HΛ3 structure is consistent with a weakly bound system. © 2023 CERN.}},
  author       = {{Acharya, S. and Basu, S. and Christiansen, P. and Matonoha, O. and Nassirpour, A.F. and Ohlson, A. and Oskarsson, A. and Richert, T. and Rueda, O.V. and Silvermyr, D. and Staa, J. and Zurlo, N.}},
  issn         = {{0031-9007}},
  keywords     = {{Binary alloys; Nitrogen compounds; Charge conjugate; Data sample; Decay channels; Effective field theory; Measured values; Measurements of; Pb-Pb collisions; Precise measurements; Separation energy; Tellurium compounds}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Measurement of the Lifetime and Λ Separation Energy of HΛ3}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.131.102302}},
  doi          = {{10.1103/PhysRevLett.131.102302}},
  volume       = {{131}},
  year         = {{2023}},
}