We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The first evidence of a deeply bound state of Xi<sup>-</sup>-<sup>14</sup>N system.
- Authors
Nakazawa, K.; Endo, Y.; Fukunaga, S.; Hoshino, K.; Hwang, S. H.; Imai, K.; Ito, H.; Itonaga, K.; Kanda, T.; Kawasaki, M.; Kim, J. H.; Kinbara, S.; Kobayashi, H.; Mishina, A.; Ogawa, S.; Shibuya, H.; Sugimura, T.; Soe, M. K.; Takahashi, H.; Takahashi, T.
- Abstract
We have observed a deeply bound state of the Ξ--14N system that decayed into twin single-hypernuclei in nuclear emulsion exposed in the E373 experiment at KEK-PS. The process is uniquely identified as Ξ- + 14 N → Λ10Be + Λ5He. We have measured the binding energy of the Ξ--14N system, ..., to be 4.38 ± 0.25 MeV, which is significantly larger than that of the Ξ--14N 3D atomic state (0.17 MeV), if both single-hypernuclei are emitted in the ground state from at-rest capture of a Ξ- hyperon. If the Λ10Be nucleus is produced in an excited state, the ... value mentioned above decreases by the excitation energy. Model calculations based on known values for 9Be excited states have predicted two excited states in the bound region. Even in the case of Λ10Be production in the highest excited state, the ... value is far from the 3D atomic level of the Ξ--14N system by more than 3.7 standard deviations. The event provides the first clear evidence of a deeply bound state of the Ξ--14N system by an attractive ΞN interaction.
- Publication
Progress of Theoretical & Experimental Physics: PTEP, 2015, Vol 2015, Issue 3, p1
- ISSN
2050-3911
- Publication type
Article
- DOI
10.1093/ptep/ptv008