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 a production and decay of ΛΛ\;10Be, ΛΛ\;11Be, or ΛΛ\;12Be* via Ξ⁻ capture in ¹⁶O. By assuming the capture in the atomic 3D state, the binding energy of two Λ hyperons$\,$(BΛΛ) of these double-Λ hypernuclei are obtained to be 15.05 ± 0.11\,MeV, 19.07 ± 0.11\,MeV, and 13.68 ± 0.11\,MeV, respectively. Based on the kinematic fitting, ΛΛ\;11Be is the most likely explanation for the observed event.
No takes yet. Share an insight, caveat, or question.
Ekawa et al. (2018) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: