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

Acharya, S; Adamova, D.; Adolfson, J; Aggarwal, M.; Rinella, G.; Agnello, M.; Agrawal, N; Bufalino, S.; Catalano, F.; Concas, M.; Grosa, F.; Fecchio, P.; Ravasenga, I

doi:10.1016/j.physletb.2019.134905

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.

HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay / Acharya, S; Adamova, D.; Adolfson, J; Aggarwal, M.; Rinella, G.; Agnello, M.; Agrawal, N; Bufalino, S.; Catalano, F.; Concas, M.; Grosa, F.; Fecchio, P.; Ravasenga, I. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 797(2019).

Titolo:	HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay
Autori:	Acharya, S Adamova, D. Adolfson, J Aggarwal, M. Rinella, G. AGNELLO, MICHELANGELO Agrawal, N BUFALINO, STEFANIA CATALANO, FABIO CONCAS, MATTEO GROSA, FABRIZIO FECCHIO, PIETRO RAVASENGA, IVAN mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2019
Rivista:	PHYSICS LETTERS. SECTION B
Digital Object Identifier (DOI):	http://dx.doi.org/10.1016/j.physletb.2019.134905
Appare nelle tipologie:	1.1 Articolo in rivista

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