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

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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. © 2019 The Author

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • University of Copenhagen
  • Variable Energy Cyclotron Centre
  • University of Brescia
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Originalspråkengelska
Artikelnummer134905
TidskriftPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volym797
StatusPublished - 2019
PublikationskategoriForskning
Peer review utfördJa