Addressing the hypertriton lifetime puzzle with ALICE at the LHC
Abstract
The ALICE Collaboration collected a large data sample of Pb-Pb
collisions at root S-NN = 5.02 TeV 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, H-3(Lambda), which is a bound state of a proton,
a neutron and a A, is the lightest known hypernucleus.
The results on the H-3(Lambda) 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 H-3(Lambda) lifetime.
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