Электронный каталог

Статья

Acharya, S.
Measurement of the Lifetime and *L Separation Energy of *3&sub(*L)H / S.Acharya, B.Batyunya, C.Ceballos Sanchez, R.A.Diaz, S.Grigoryan, A.Kondratyev, L.Malinina, K.Mikhaylov, P.Nomokonov, V.Pozdniakov, E.Rogochaya, G.Romanenko, B.Rumyantsev, A.Vodopyanov, [ALICE Collab.] // Physical Review Letters [Electronic resource]. – 2023. – Vol.131, No.10. – P.102302. – URL: https://doi.org/10.1103/PhysRevLett.131.102302. – Bibliogr.:65.

The most precise measurements to date of the 3ΛH lifetime τ and Λ separation energy BΛ are obtained using the data sample of Pb-Pb collisions at √sNN=5.02  TeV collected by ALICE at the LHC. The 3ΛH is reconstructed via its charged two-body mesonic decay channel (3ΛH→3He+π− and the charge-conjugate process). The measured values τ=[253±11(stat)±6(syst)]  ps and BΛ=[102±63(stat)±67(syst)]  keV are compatible with predictions from effective field theories and confirm that the 3ΛH structure is consistent with a weakly bound system.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами
Спец.(статьи,препринты) = С 346.5е - Гиперфрагменты. Свойства гиперядер и взаимодействие их с веществом