Measurement of monoenergetic neutrons from the [Formula presented] reaction at rest

M. Chiba, K. Doi, T. Fujitani, K. Inoue, J. Iwahori, M. Kawaguti, M. Kobayashi, M. Koike, T. Kozuki, S. Kurokawa, H. Kusumoto, H. Nagano, Y. Nagashima, T. Omori, S. Sugimoto, M. Takasaki, F. Takeutchi, M. Tsuchiya, M. Ueda, Y. YamaguchiH. Yoshida

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


To search for baryonium states, a highly sensitive experiment with good statistics has been carried out at KEK by using an antiproton beam, deuterium target, and time-of-flight counter together with a modularized NaI(Tl) detector. At the [Formula presented] level, no narrow peaks due to the production of baryonia in the [Formula presented] reaction have been observed in the neutron spectra. At lower significance levels, however, we have observed four narrow peaks with [Formula presented], and two at an even lower significance level, in different charge-multiplicity final states. The recoil momentum distribution of the neutrons has been extracted for the channel with zero charge prongs. The energy spectra for [Formula presented] rays in coincidence with the neutron have been also obtained.

Original languageEnglish
Pages (from-to)40-53
Number of pages14
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number1
Publication statusPublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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