Acharya, S; Adamová, D; Adhya, SP; Adler, A; Adolfsson, J; Aggarwal, MM; Rinella, G Aglieri; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, SU; Akindinov, A; Al-Turany, M; Alam, SN; Albuquerque, DSD; Aleksandrov, D; Alessandro, B; Alfanda, HM; Molina, R Alfaro; Ali, B; Ali, Y; Alici, A; Alkin, A; Alme, J; Alt, T; Altenkamper, L; Altsybeev, I; Anaam, MN; Andrei, C; Andreou, D; Andrews, HA; Andronic, A; Angeletti, M; Anguelov, V; Anson, C; Antičić, T; Antinori, F; Antonioli, P; Anwar, R; Apadula, N; Aphecetche, L; Appelshäuser, H; Arcelli, S; Arnaldi, R; Arratia, M; Arsene, IC; Arslandok, M; Augustinus, A; Averbeck, R; Aziz, S; Azmi, MD; Badalà, A; Baek, YW; Bagnasco, S; Bai, X; Bailhache, R; Bala, R; Baldisseri, A; Ball, M; Balouza, S; Baral, RC; Barbera, R; Barioglio, L; Barnaföldi, GG; Barnby, LS; Barret, V; Bartalini, P; Barth, K; Bartsch, E; Baruffaldi, F; Bastid, N; Basu, S; Batigne, G; Batyunya, B; Batzing, PC; Bauri, D; Alba, JL Bazo; Bearden, IG; Bedda, C; Behera, NK; Belikov, I; Bellini, F; Bellwied, R; Belyaev, V

doi:10.1016/j.physletb.2019.134905

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

2019

Acharya, S;
Adamová, D;
Adhya, SP;
Adler, A;
Adolfsson, J;
Aggarwal, MM;
Rinella, G Aglieri;
Agnello, M;
Agrawal, N;
Ahammed, Z;
Ahmad, S;
Ahn, SU;
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Alam, SN;
Albuquerque, DSD;
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Published Web Location

https://doi.org/10.1016/j.physletb.2019.134905

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.

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UC Berkeley

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

Published Web Location