https://doi.org/10.1051/epjconf/202227103002
Ξ-nuclear constraints from 𝚵− emulsion capture events
Racah Institute of Physics, The Hebrew University, Jerusalem 9190401, Israel
* Eliahu.Friedman@mail.huji.ac.il
** avragal@savion.huji.ac.il
Published online: 9 November 2022
All five KEK and J-PARC two-body Ξ−+AZ → A′ΛZ’ + A″ΛZ” capture events in light emulsion nuclei, including KISO and IBUKI in 14N, are consistent with Coulombassisted 1pΞ− nuclear states. The underlying Ξ-nuclear potential is strongly attractive, with nuclear-matter depth VΞ larger than 20 MeV. The recent 14N capture events KINKA and IRRAWADDY assigned by J-PARC E07 to 1sΞ− nuclear states, and implying considerably shallower VΞ, have also another interpretation as 1pΞ0 nuclear states.
© The Authors, published by EDP Sciences, 2022
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