Measurement of the Lifetime and Λ Separation Energy of 3ΛH



Acharya, S, Adamova, D, Adler, A, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Ahuja, I
et al (show 1022 more authors) (2023) Measurement of the Lifetime and Λ Separation Energy of 3ΛH PHYSICAL REVIEW LETTERS, 131 (10). 102302-. ISSN 0031-9007, 1079-7114

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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.

Item Type: Article
Uncontrolled Keywords: ALICE Collaboration
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 03 Oct 2023 15:16
Last Modified: 23 May 2026 07:52
DOI: 10.1103/PhysRevLett.131.102302
Open Access URL: https://doi.org/10.1103/PhysRevLett.131.102302
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3173372
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