Kaonic nuclear state search via K- reaction at rest on 4He target

M. Iwasaki, H. Bhang, J. Chiba, S. Choi, Y. Fukuda, T. Hanaki, R. S. Hayano, M. Iio, T. Ishikawa, S. Ishimoto, T. Ishiwatari, K. Itahashi, M. Iwai, P. Kienle, J. H. Kim, Y. Matsuda, H. Ohnishi, S. Okada, H. Outa, M. SatoS. Suzuki, T. Suzuki, D. Tomono, E. Widmann, T. Yamazaki, H. Yim

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Very recently, we have performed a couple of experiments, KEK PS-E549/E570, for the detailed study of the strange tribaryon S0 (3115) obtained in KEK PS-E471. In contrast to the previous proton spectrum, no narrow (∼20 MeV) peak structure was found either in the inclusive 4He(stoppedK-, p) or in the semi-inclusive 4He(stoppedK-, p X±) reaction channel, which is equivalent to the previous E471 event trigger condition. Detailed analysis of the present data and simulation shows that the peak, corresponding to S0 (3115), has been an experimental artifact. Present analysis does not exclude the possible existence of a much wider structure.

Original languageEnglish
Pages (from-to)186-196
Number of pages11
JournalNuclear Physics A
Issue number1-4
Publication statusPublished - 2008 May 15
Externally publishedYes


  • Kaon-baryon interaction
  • Mesic nuclei

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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