<SUP>3</SUP><sub>Λ</sub>H and <SUP>3</SUP><sub>(Λ)over-bar</sub>(H)over-bar lifetime measurement in Pb-Pb collisions at √<i>s</i><sub>NN</sub>=5.02 TeV via two-body decay



Acharya, S, Adamova, D, Adhya, SP, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z
et al (show 1012 more authors) (2019) <SUP>3</SUP><sub>Λ</sub>H and <SUP>3</SUP><sub>(Λ)over-bar</sub>(H)over-bar lifetime measurement in Pb-Pb collisions at √<i>s</i><sub>NN</sub>=5.02 TeV via two-body decay. PHYSICS LETTERS B, 797. p. 134905.

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Abstract

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=242−38+34 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 04 Dec 2019 16:52
Last Modified: 20 Jun 2024 19:02
DOI: 10.1016/j.physletb.2019.134905
Open Access URL: https://doi.org/10.1016/j.physletb.2019.134905
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3064831