Addressing the hypertriton lifetime puzzle with ALICE at the LHC

The ALICE Collaboration collected a large data sample of Pb-Pb collisions at sNN=5.02TeV in 2015 at the Large Hadron Collider (LHC) and the excellent particle identification (PID) capabilities allow for the detection of rarely produced (anti-)hypernuclei. In particular, the (anti-)hypertriton, HΛ3,...

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Bibliographic Details
Published inNuclear physics. A Vol. 982; pp. 815 - 818
Main Author Trogolo, Stefano
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2019
Subjects
Heavy-ion collisions
hypertriton production
lifetime
Heavy-ion collisions
lifetime
hypertriton production
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Summary:The ALICE Collaboration collected a large data sample of Pb-Pb collisions at sNN=5.02TeV in 2015 at the Large Hadron Collider (LHC) and the excellent particle identification (PID) capabilities allow for the detection of rarely produced (anti-)hypernuclei. In particular, the (anti-)hypertriton, HΛ3, which is a bound state of a proton, a neutron and a Λ, is the lightest known hypernucleus. The results on the HΛ3 production are compared with the predictions from a model based on coalescence approach and from statistical-thermal models to investigate the production mechanisms in heavy-ion collisions. Emphasis will also be put on the latest and more precise determination of the HΛ3 lifetime.
ISSN:0375-9474
DOI:10.1016/j.nuclphysa.2018.11.016