Motivated by the recently observed hypernucleus (Kiso event) 15 Ξ C ( 14 N+Ξ − ), we identify the state of this system theoretically within the framework of the relativistic-mean-field and Skyrme-Hartree-Fock models. The ΞN interactions are constructed to reproduce the two possibly observed Ξ − removal energies, 4.38 ± 0.25 MeV or 1.11 ± 0.25 MeV. The present result is preferable to be 14 N (g.s.)+Ξ − (1p), corresponding to the latter value.

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