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Measurement of the Lifetime and Λ Separation Energy of 3ΛH

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成果类型:
期刊论文
作者:
Acharya, S.;Adamova, D.;Adler, A.;Rinella, G. Aglieri;Agnello, M.;...
通讯作者:
Acharya, S
作者机构:
[Bastid, N.; Manso, F.; Porteboeuf-Houssais, S.; Tang, S.; Acharya, S; Acharya, S.; Crochet, P.; Barret, V.; Lopez, X.; Dupieux, P.; Taillepied, G.] Univ Clermont Auvergne, CNRS, IN2P3, LPC, Clermont Ferrand, France.
[Grigoryan, S.] Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia.
[Koryciak, S. D.; Kitowski, J. P.; Gorgon, M.; Horzyk, A.; Jablonski, M.; Balis, B.; Russek, P. G.] AGH Univ Sci & Technol, Krakow, Poland.
[Tersimonov, G.; Trubnikov, V.; Zinovjev, G.] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine.
[Ghosh, S. K.; Prasad, S. K.; Das, S.; Biswas, S.; Das, P.; Modak, A.; Banerjee, D.; Bhat, M. A.] Bose Inst, Dept Phys, Kolkata, India.
通讯机构:
[Acharya, S ] U
Univ Clermont Auvergne, CNRS, IN2P3, LPC, Clermont Ferrand, France.
Homi Bhabha Natl Inst, Ctr Variable Energy Cyclotron, Kolkata, India.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2023
卷:
131
期:
10
页码:
102302
基金类别:
Council [950692, 824093, 896850]; European Union; Academy of Finland (Center of Excellence in Quark Matter) [346327, 346328]
机构署名:
本校为其他机构
摘要:
The most precise measurements to date of the _{Λ}^{3}H lifetime τ and Λ separation energy B_{Λ} are obtained using the data sample of Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV collected by ALICE at the LHC. The _{Λ}^{3}H is reconstructed via its charged two-body mesonic decay channel (_{Λ}^{3}H→^{3}He+π^{-} and the charge-conjugate process). The measured values τ=[253±11(stat)±6(syst)]  ps and B_{Λ}=[102±63(stat)±67(syst)]  keV are compatible with predictions from effective field theories and confirm that the _{Λ}^...

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