Measurement of the Lifetime and Λ Separation Energy of 3ΛH


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Acharya S., Adamová D., Adler A., Aglieri Rinella G., Agnello M., Agrawal N., ...More

PHYSICAL REVIEW LETTERS, vol.131, no.10, 2023 (SCI-Expanded, Scopus) identifier identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 131 Issue: 10
  • Publication Date: 2023
  • Doi Number: 10.1103/physrevlett.131.102302
  • Journal Name: PHYSICAL REVIEW LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Compendex, INSPEC, zbMATH, DIALNET, Nature Index
  • Open Archive Collection: AVESIS Open Access Collection
  • Yıldız Technical University Affiliated: Yes

Abstract

The most precise measurements to date of the 3AH lifetime z and A separation energy BA are obtained using the data sample of Pb-Pb collisions at ffiffiffiffiffiffiffi = 5.02 TeV collected by ALICE at the LHC. The 3 sNNAH is reconstructed via its charged two-body mesonic decay channel (3AH -> 3He + x-- and the charge-conjugate process). The measured values z = [253 1 11(stat) 1 6(syst)] ps and BA = [102 1 63(stat) 1 67(syst)] keV are compatible with predictions from effective field theories and confirm that the 3AH structure is consistent with a weakly bound system.