2026-06-27T20:44:53Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/758 2021-12-13T02:27:05Z 1582963739756:1582967025340 user-um

Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment Ekawa, H. Nakazawa, K. Khin Than Tint, et.al A double-Λ hypernucleus, ΛΛBe⁠, was observed by the J-PARC E07 Collaboration in nuclear emulsions tagged by the (⁠K−,K+⁠) reaction. This event was interpreted as the production and decay of 10ΛΛBe⁠, 11ΛΛBe⁠, or 12ΛΛBe∗ via Ξ− capture in 16O⁠. By assuming capture in the atomic 3D state, the binding energies of two Λ hyperons (⁠BΛΛ⁠) of these double-Λ hypernuclei are obtained to be 15.05±0.11MeV⁠, 19.07±0.11MeV⁠, and 13.68±0.11MeV⁠, respectively. Based on the kinematic fitting, 11ΛΛBe is the most likely explanation for the observed event. 2019 http://hdl.handle.net/20.500.12678/0000000758 https://meral.edu.mm/records/758