3ΛH and 3Λ¯H¯ lifetime measurement in Pb-Pb collisions at √sNN= 5.02 TeV via two-body decay (CROSBI ID 276352)
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Podaci o odgovornosti
Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zurlo, N.
ALICE Collaboration
engleski
3ΛH and 3Λ¯H¯ lifetime measurement in Pb-Pb collisions at √sNN= 5.02 TeV via two-body decay
An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at √sNN= 5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ = 242 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle.
lifetime measurement ; Pb-Pb ; two-body decay
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Podaci o izdanju
797
2019.
134905
12
objavljeno
0370-2693
1873-2445
10.1016/j.physletb.2019.134905
Povezanost rada
Fizika
