Measurement of the Lifetime and Λ Separation Energy of 3ΛH
Abstract
The most precise measurements to date of the 3ΛH 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 3ΛH is reconstructed via its charged two-body mesonic decay channel (3ΛH→3He+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 3ΛH structure is consistent with a weakly bound system.
Main Author
Format
Articles
Research article
Published
2023
Series
Subjects
Publication in research information system
Publisher
American Physical Society (APS)
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202309275265Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.131.102302
Language
English
Published in
Physical Review Letters
Citation
- ALICE Collaboration. (2023). Measurement of the Lifetime and Λ Separation Energy of 3ΛH. Physical Review Letters, 131, Article 102302. https://doi.org/10.1103/PhysRevLett.131.102302
License
Funder(s)
Research Council of Finland
Research Council of Finland
European Commission
Funding program(s)
Centre of Excellence, AoF
Centre of Excellence, AoF
RIA Research and Innovation Action, H2020
Huippuyksikkörahoitus, SA
Huippuyksikkörahoitus, SA
RIA Research and Innovation Action, H2020
Copyright© 2023 CERN, for the ALICE Collaboration