Measurement of the Lifetime and ? Separation Energy of _{?}^{3}H. in Physical review letters / Phys Rev Lett. 2023 Sep 8;131(10):102302. doi: 10.1103/PhysRevLett.131.102302.
2023
ASL Vercelli
Tipo pubblicazione
Journal Article
Autori/Collaboratori (1042)Vedi tutti...
Acharya S
Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
Adamová D
Nuclear Physics Institute of the Czech Academy of Sciences, Husinec-?ež, Czech Republic.
Adler A
Johann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik, Fachbereich Informatik und Mathematik, Frankfurt, Germany.
et alii...
Abstract
The most precise measurements to date of the _{?}^{3}H lifetime ? and ? separation energy B_{?} are obtained using the data sample of Pb-Pb collisions at sqrt[s_{NN}]=5.02??TeV collected by ALICE at the LHC. The _{?}^{3}H is reconstructed via its charged two-body mesonic decay channel (_{?}^{3}H?^{3}He+?^{-} and the charge-conjugate process). The measured values ?=[253±11(stat)±6(syst)]??ps and B_{?}=[102±63(stat)±67(syst)]??keV are compatible with predictions from effective field theories and confirm that the _{?}^{3}H structure is consistent with a weakly bound system.
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PMID : 37739380
DOI : 10.1103/PhysRevLett.131.102302