HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay

Academic Article

Abstract

  • © 2019 The Author 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.
  • Authors

    Published In

  • Physics Letters B  Journal
  • Digital Object Identifier (doi)

    Author List

  • Acharya S; Adamová D; Adhya SP; Adler A; Adolfsson J; Aggarwal MM; Aglieri Rinella G; Agnello M; Agrawal N; Ahammed Z
  • Volume

  • 797