Observation of Coulomb-Assisted Nuclear Bound State of Ξ - N 14 System

(J-PARC E07 Collaboration)

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36 Citations (Scopus)


In an emulsion-counter hybrid experiment performed at J-PARC, a Ξ- absorption event was observed which decayed into twin single-Λ hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as Ξ-+N14→BeΛ10+HeΛ5. For the binding energy of the Ξ- hyperon in the Ξ - N14 system a value of 1.27±0.21 MeV was deduced. The energy level of Ξ- is likely a nuclear 1p state which indicates a weak ΞN-ΛΛ coupling.

Original languageEnglish
Article number062501
JournalPhysical review letters
Issue number6
Publication statusPublished - Feb 11 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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