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.

Measurement of the Lifetime and Λ Separation Energy of _{Λ}^{3}H

Beole, S;Bianchi, L;Botta, E;Ferretti, A;Gagliardi, M;Masera, M;Mazzaschi, F;Pennisi, M;Pucillo, S;Quaglia, L;Terlizzi, L;Trogolo, S;Vercellin, E;
2023-01-01

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.
2023
131
10
102302
102302
Acharya, S; Adamová, D; Adler, A; Aglieri Rinella, G; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, S U; Ahuja, I; Akindinov, A; Al-Turany, M; Al...espandi
File in questo prodotto:
File Dimensione Formato  
PhysRevLett.131.102302.pdf

Accesso aperto

Tipo di file: PDF EDITORIALE
Dimensione 15.98 MB
Formato Adobe PDF
15.98 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1945717
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 3
social impact