Λ3H and Λ‾3H‾ lifetime measurement in Pb–Pb collisions at √sNN = 5.02 TeV via two-body decay
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.
Main Author
Format
Articles
Research article
Published
2019
Series
Subjects
Publication in research information system
Publisher
Elsevier
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201909304281Use this for linking
Review status
Peer reviewed
ISSN
0370-2693
DOI
https://doi.org/10.1016/j.physletb.2019.134905
Language
English
Published in
Physics Letters B
Citation
- ALICE Collaboration. (2019). Λ3H and Λ‾3H‾ lifetime measurement in Pb–Pb collisions at √sNN = 5.02 TeV via two-body decay. Physics Letters B, 797, Article 134905. https://doi.org/10.1016/j.physletb.2019.134905
License
Copyright© 2019 The Author