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" HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay "
Acharya, SAdamová, DAdhya, SPAdler, AAdolfsson, JAggarwal, MMAglieri Rinella, GAgnello, MAgrawal, NAhammed, ZAhmad, SAhn, SUAkindinov, AAl-Turany, MAlam, SNAlbuquerque, DSDAleksandrov, DAlessandro, BAlfanda, HMAlfaro Molina, RAli, BAli, YAlici, AAlkin, AAlme, JAlt, Tet al.
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AL
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902194
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LA9k2954zs
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| Title & Author
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HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay [Article]\ Acharya, SAdamová, DAdhya, SPAdler, AAdolfsson, JAggarwal, MMAglieri Rinella, GAgnello, MAgrawal, NAhammed, ZAhmad, SAhn, SUAkindinov, AAl-Turany, MAlam, SNAlbuquerque, DSDAleksandrov, DAlessandro, BAlfanda, HMAlfaro Molina, RAli, BAli, YAlici, AAlkin, AAlme, JAlt, Tet al.
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2019
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Lawrence Berkeley National Laboratory
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© 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.
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